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Fiscal 2026 2nd Quarter Financial Results Seibu Giken Co. , Ltd. ( Ticker code : 6223 ) August 7 , 2026 Disclaimer regarding forward - looking statements Because the forward - looking statements contained in this report are based on information available at the time of publication , Actual results may differ from these forecasts due to risk and uncertainty . Notes : 1. This is an English translation from the original presentation in Japanese . 2. In this presentation , " Fiscal 2026 " or " FY12 / 26 " refers to the year ending December 31 , 2026 SEIBU GIKEN Copyright @ 2026 SEIBU GIKEN CO . , LTD . All Rights Reserved .
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. Q2 FY2026 Results Overview 2 (JPY: Millions) Q2 FY2025 Q2 FY2026 YoY Amount vs net sales(%) Amount vs net sales(%) Diff. ％ Net sales 13,897 18,132 4,234 130.5 Gross profit 5,124 36.9 6,179 34.1 1,055 120.6 Selling, general & administrative expenses 3,093 22.3 3,617 20.0 524 117.0 Operating profit 2,031 14.6 2,562 14.1 530 126.1 Ordinary profit 1,985 14.3 2,848 15.7 862 143.4 Quarterly net profit attributable to Seibu Giken Co., Ltd. stockholders 1,496 10.8 2,555 14.1 1,059 170.8 Quarterly net profit per share (JPY) 74.06 130.67 - - EBITDA*1 2,494 3,085 591 123.7 EBITDA margin*2 (%) 18.0 17.0 - - *1: EBITDA = operating profit + depreciation *2: EBITDA margin = EBITDA/ net sales • Net sales (+4,234): Large total engineering projects ordered in the previous period in Japan drove sales • Operating profit (+530): Profit increased as the rise in gross profit driven by higher sales more than offset the decline in gross margin and the increase in SG&A expenses. ⇒ Progress against full-year forecast is in line with expectations; no changes to full-year forecast.
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. Q2 FY2026 Operating Profit Factor Analysis 3 2,031 2,562 3,518 -2,847 -353 214 Q2 FY2025 Sales COGS SG&A FX Q2 FY2026 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 (JPY: Millions) ◼ Increase in sales: Total engineering sales increased in Japan. ◼ Increase in COGS: Increased sales led to higher manufacturing costs. ◼ Increase in SG&A: Higher personnel and computer-related costs. ◼ FX impact: A positive impact of approximately JPY 200 mn due to JPY depreciation
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. Q2 FY2026 Net Sales by Product and Business (JPY: Millions) Q2 FY2025 Q2 FY2026 YoY (%) Desiccant dehumidifier 6,888 12,996 188.7 VOC concentrator 5,386 3,059 56.8 Others 1,621 2,076 128.0 Total 13,897 18,132 130.5 ・Desiccant dehumidifiers grew significantly in Japan due to large projects ordered in the previous period. ・VOC concentrators decreased in Japan, China, Asia, etc. ・Others increased due to construction management, etc. ・By business, Total Engineering saw significant growth driven by projects for energy devices in Japan. (JPY: Millions) Q2 FY2025 Q2 FY2026 YoY (%) Core Business : Selling module/equipment 9,518 9,842 103.4 Growth Business : Total engineering 4,378 8,289 189.3 Total 13,897 18,132 130.5 Product Business 4
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. Q2 FY2026 Net Sales by Region (JPY: Millions) Q2 FY2025 Q2 FY2026 YoY (%) Japan 7,130 10,149 142.3 China 2,738 3,101 113.2 Korea 459 1,372 298.6 Other Asia 971 668 68.8 Europe 1,649 1,859 112.7 U.S. 448 594 132.5 Other North America 164 245 149.4 Others 334 140 42.0 Total 13,897 18,132 130.5 • Japan: Total engineering projects ordered in the previous period drove sales increase. • Korea: Construction management for semiconductor materials drove sales increase. • China: Desiccant dehumidifiers for battery factories contributed to the increase in sales 5
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. Consolidated Balance Sheet as of June 30, 2026 6 (JPY: Millions) As of December 31, 2025 As of June 30, 2026 Cash and cash equivalents 15,505 15,015 Trade notes and accounts receivable 9,327 9,384 Other current assets 8,374 9,875 Net property, plant and equipment 13,766 14,945 Other fixed assets 1,223 1,310 Total Assets 48,197 50,526 Interest-bearing debt*1 4,187 9,228 Other liabilities*2 11,785 8,190 Total Liabilities 15,972 17,418 Total Net Assets 32,224 33,108 *1： Interest-bearing debt = Current portion of long-term debt + Short-term lease + Bonds + Long-term debt + Lease *2： Other liabilities = Total liabilities – Interest-bearing debt
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. 15,536 17,038 8,814 7,165 8,814 4,768 4,620 4,858 5,537 5,926 1,236 2,977 1,892 1,470 1,892 Order Intake Order Backlog Order Intake Order Backlog Order Intake 2025/12/Q2 2026/12/Q2 16,632 15,061 8,634 22,373 11,302 10,422 5,370 7,912 3,580 5,511 3,402 3,021 1,657 0 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 Order Intake Order Backlog Order Intake Order Backlog FY2024 FY2025 33,307 16,54017,407 7 Order intake was 72.3% YoY; order backlog was 85.7% vs. end of previous period. ・Reactionary decline from large projects in the same period last year, incl. one of ~JPY 4.8 bn） ・2026 Q2 order intake is adjusted for orders received in 2025 Q2 and cancelled in 2026 Q2, ~JPY 1.0 bn of VOC recovery equipment. ( *Order intake excluding this cancellation is shown at the far right.) 14,17315,564 24,636 21,541 30,995 * * （excluding the cancellation） Trend of Order Intake and Backlog ■デシカント除湿機 ■VOC濃縮装置 ■その他Desiccant dehumidifier VOC concentrator Others (JPY: Millions) FY2025FY2024 Note : The above amounts are stated at the sales price and do not include consumption tax, etc As of June 30, 2025 As of June 30, 2026
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. 8 Customer Market Details of order Approx. amount of order Expected delivery Announcement Chinese engineering company China VOC concentrators for a major Chinese shipyard JPY 500 mn Q3 FY12/26 2026/5/26 Taiwanese engineering company Taiwan VOC concentrators for a major Taiwanese foundry JPY 1.58 bn Q3 FY12/26～ Q4 FY12/27 2026/6/25 Major Orders in 1 st Half of 2025 *An additional order worth JPY approximately 280 mn for the same project was received in June as well.
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. 9 February: Certified as tax-incentive-eligible machinery under the MAFF-led '*MIDORI Strategy for Sustainable Food Systems' Efforts in "C-SAVE Green" (CO2 concentration and supplying equipment for greenhouse) * MAFF's 2021 strategy to raise productivity and sustainability in food, agriculture, forestry and fisheries through innovation June: Joined the '*Fukuoka Future-Oriented Horticultural Agriculture Creation Consortium' *A body advancing sustainable horticultural agriculture and the adoption of innovative technologies in Fukuoka Prefecture Topics for 1st Half of 2026 Atmospheric carbon dioxide (CO2) concentration and supplying equipment for greenhouse Benefit s ・Increase in yield - Verified by test with strawberry cultivation in elevated beds ・Reduce environmental impact - Supply safe and clean CO2 at normal temperatures without using fossil fuels ・Easy to handle - No fuel supply or gas replacement required as capturing CO2 from the atmosphere. Easy installation.
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. Participation in the cross -industry project “ Swiftfab ” for battery manufacturing equipment, involving nine BASC * member companies This project is positioned as part of efforts to advance the implementation of the Ministry of Economy, Trade and Industry's battery industry strategy and strengthen the stable domestic supply system for batteries. It aims to establish a cross-industry battery manufacturing platform through participation by BASC member companies. Develop and deploy integrated battery manufacturing lines combining buildings, equipment, and production systems, providing aframework enabling the establishment of high-quality manufacturing bases in an overwhelmingly short timeframe and at low cost. Nine BASC member companies from diverse fields involved in battery manufacturing have joined forces, pooling their respectivestrengths. This marks the world's first initiative where the industry collaborates to build a foundation for collective optimization, transcending the limitations of “individual corporate efforts.” Within this framework, BASC participates as a neutral driving force, coordinating the development of shared intellectual property, technical standardization, and international expansion strategies. The outcomes of this project will be made available to BASC member companies going forward, with plans to expand it as a “collaborative industrial infrastructure.” *BASC：Battery Association for Supply Chain. Seibu Giken joined in 2023 and is working toward the development of the battery supply chain. The Purpose of “Swiftfab” Contents of “Swiftfab” Features of “Swiftfab” The Role of Seibu Giken Leveraging our expertise in controlling and maintaining air quality in manufacturing environments cultivated over many years,along with our energy control know-how, we are responsible for developing and supplying battery manufacturing environments. Nine BASC member companies, including ours, aim to establish new standards for battery manufacturing facilities. 10
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. Project Name Swiftfab Project operator SwiftfabEnergySystems Co., Ltd. Representative Representative Director and President Keisuke Kida* Date of Establishment April 2026 Location 6th Floor, Kojun Building, 6-8-7 Ginza, Chuo-ku, Tokyo Co-investor Seibu Giken DR Engineering Co., Ltd., Komatsu NTC Ltd., Toshin Co., Ltd., Yutaka Electronics Industry Co., Ltd., Hirata Corporation, Hitachi, Ltd., Ricoh Elemex Corporation, JTEKT Corporation, Taikisha Ltd. Business Activities Development, design, sales, and operational support for storage battery manufacturing equipment and line Intended Applications Automotive and Stationary Lithium-Ion Batteries / Next-Generation Battery Manufacturing Company Homepage https://www.swiftfab.co.jp *Director, Senior Executive Officer, Chief Strategy Officer Seibu Giken Co., Ltd. Representative Director Seibu Giken DR Engineering Co., Ltd. Participation in the cross -industry project “Swiftfab” for battery manufacturing equipment, involving nine BASC * member companies *BASC：Battery Association for Supply Chain. Seibu Giken joined in 2023 and is working toward the development of the battery supply chain. 11
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. C op yri gh t @ 2 0 2 6 SE IB U GIKE N C O. , LTD. All R i gh t s R eserved . Fiscal 2026 Forecast
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. FY2026 Forecast Summary 13 ◼ Net sales are expected to grow steadily. ◼ Sales growth is expected in Asia, China, and Europe. ◼ Operating profit is expected to decrease due to increased investment in human capital for corporate growth, among other factors. Shareholder Returns ・Annual dividend per share for FY2026: JPY 70 planned ・Share buyback executed (Amount: approx. JPY 1 bn; Shares: approx. 425,000) Net sales & Operating profit （JPY:Millions） FY2026 Net sales & Operating profit （JPY:Millions） Net sales 36,050 YoY 105.0% Operating profit 4,030 YoY 89.0% Operating profit ratio 11.2 % 24,890 28,725 32,069 34,322 36,050 4,604 4,298 4,030 4,530 4,030 18.5% 15.0% 12.6% 13.2% 11.2% 0.0% 10.0% 20.0% 30.0% 40.0% 0 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 2022 2023 2024 2025 2026E Sales OP OP ratio 11,225 (45.2%) 11,606 (40.4%) 6,851 (21.4%) 9,060 (25.1%) 5,740 (16.7%) Sales in China (Sales ratio) No change from the announcement on Feb. 13, 2026 （Q1 results: impact of the Middle East situation and share buyback details noted ） [Impact of the Middle East Situation] ・Price increases and supply instability reported for some raw materials (paints, etc.) ・Securing alternatives and other suppliers; considering price increases for some products ・Impact on business performance expected to be minimal at this time
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. FY2026 Forecast (JPY: Millions) FY2025 FY2026 Forecast YoY Amount vs net sales(%) Amount vs net sales(%) Diff. ％ Net sales 34,322 36,050 1,728 105.0 Gross profit 11,672 34.0 11,820 32.8 148 101.3 Selling, general & administrative expenses 7,141 20.8 7,790 21.6 649 109.1 Operating profit 4,530 13.2 4,030 11.2 -500 89.0 Ordinary profit 4,494 13.1 4,460 12.4 -34 99.2 Net profit attributable to Seibu Giken Co., Ltd. stockholders 3,455 10.1 3,870 10.7 415 112.0 EBITDA*1 5,511 5,260 -251 95.4 EBITDA margin*2（％） 16.1 14.6 - - *1: EBITDA = unaudited figures calculated by operating income + depreciation *2: EBITDA margin = EBITDA/ sales No change from the announcement on Feb. 13, 2026 14
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. FY2026 Forecast ・Increase in Net sales: Sales growth in China and Japan ・Increase in Gross profit: While gross profits are expected to increase due to rising sales, the gross profit margin is projected to decline. ・Operating profit: Increased selling, general, and administrative expenses are expected to decrease profits. Investments aimed at future growth are expected to increase. →Human Capital Investment: Personnel expenses increase（To secure personnel for undertaking total engineering business, etc.） →IT investment：Computer-related expenses increase（Company-wide network equipment maintenance-related expenses、AI implementation costs） →Prototype testing expenses increase（New Initiatives to Ensure Stable Supply of Storage Batteries：Eligibility for subsidy） ・Ordinary profit: Expect "subsidy for initiatives to ensure stable supply of storage batteries" to be classified as non-operating income. ・Profit: Expect “Mid-sized and Small Business Growth Investment Subsidy” as extraordinary income. Updated from the announcement on Feb. 13, 2026 （Updated the 1st line following the revision of the regional sales breakdown ） 15
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. Net Sales by Product and business 16 (JPY: Millions) FY2025 FY2026 Forecast (Updated) YoY (%) Desiccant dehumidifier 19,700 22,860 116.0 VOC concentrator 9,863 9,090 92.2 Others 4,758 4,100 86.2 Total 34,322 36,050 105.0 (JPY: Millions) FY2025 FY2026 Forecast (Updated) YoY (%) Core Business : Selling module/equipment 22,652 23,260 102.7 Growth Business : Total engineering 11,670 12,790 109.6 合計 34,322 36,050 105.0 Product Business FY2026 Original Forecast as of Feb. 13, 2026 23,190 9,540 3,310 36,050 FY2026 Original Forecast as of Feb. 13, 2026 20,520 15,530 36,050 Update from the announcement on Feb. 13, 2026 ・Sales of desiccant dehumidifiers are expected to increase due to energy device factory related projects in Japan and China. ・Sales of VOC concentrators are expected to grow in China, but sales in Japan are expected to decrease as a result of the previous period's effects. ・By business segment, total engineering, a growth business, are expected to increase due to energy device factory related projects in Japan. Difference from previous forecast: ・Desiccant dehumidifiers and VOC concentrators fell below the previous forecast, while Others exceeded the previous forecast owing to increased total engineering sales in Korea ・By business, total engineering fell below the previous forecast due to lower sales in Asia, while module/equipment exceeded the previous forecast due to higher sales in China and Japan
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. Net Sales by Region 17 (JPY: Millions) FY2025 FY2026 Forecast (Updated) YoY (%) Japan 15,639 16,400 104.9 China 5,740 9,060 157.8 Korea 2,561 2,770 108.2 Other Asia 2,280 2,130 93.4 Europe 3,521 3,350 95.1 U.S. 3,706 1,630 44.0 Other North America 409 440 107.6 Others 463 270 58.3 Total 34,322 36,050 105.0 FY2026 Original Forecast as of Feb. 13, 2026 15,700 6,730 1,950 4,540 4,480 1,930 380 320 36,050 Difference from previous forecast ・China exceeded the previous forecast on higher battery projects and a revised sales-recognition region for one large project (Europe→China), etc. ・Asia (excl. China/Korea) fell below the previous forecast on the cancellation of a project ordered in India in 2025 and a timing shift of a project expected this period in Southeast Asia, etc. ・Europe fell below the previous forecast on the loss of a large project expected this period and a revised sales-recognition region for one large project (Europe→China), etc. Update from the announcement on Feb. 13, 2026 ・Sales in Japan are expected to increase due to the growth in sales of desiccant dehumidifiers offset decrease in VOC concentrators and other products. ・Sales in China are expected to increase due to the growth in sales of desiccant dehumidifiers and VOC concentrators. ・The U.S. saw lower sales on the reaction to the same period last year
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. Dividend Policy 18 ・Annual dividend per share for FY2026: JPY 70 planned (The consolidated dividend payout ratio forecast is 40% or higher, excluding the impact of growth investment subsidies and other subsidies included in the profit forecast.) ・ Share buyback based on Board resolution of Feb. 13, 2026 (Amount: approx. JPY 1 bn; Shares: approx. 425,000) ・Whilst maintaining stable dividends, reward shareholders while balancing with the sound financial position and retained earnings for the future. ・Annual year-end dividend with the last day of each fiscal year as the record date is paid once a year ・Aiming at 40% or more consolidated dividend payout ratio as significant indicator JPY 60 JPY 70 JPY 70 JPY 70 2023/12 2024/12 2025/12 2026/12 (Forecast) Dividend per Share
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. C op yri gh t @ 2 0 2 6 SE IB U GIKE N C O. , LTD. All R i gh t s R eserved . Appendix
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. Cash Flows (JPY: Millions) Q2 FY2024 Q2 FY2025 Q2 FY2026 Cash from operating activities 3,147 1,730 -2,679 Cash from investing activities -1,137 -1,088 -644 Free cash flow 2,010 642 -3,323 Cash from financing activities -1,046 -291 2,584 Cash and cash equivalents at end of period 13,213 13,917 14,614 20
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. Capital Expenditures, Depreciation and R&D Expenses (JPY: Millions) FY2024 FY2025 Q2 FY2026 FY2026 Forecast Capital expenditures* 1,736 (2,483) 3,352 (2,701) 1,591 (578) 5,150 Depreciation 962 980 523 1,230 R&D expenses 348 388 170 390 Note*: Figures indicated on a cash basis (figures in parentheses on an accrual basis) 21
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. FY2025 Quarterly Financial Results (JPY: Millions) FY2025 Q1 FY2025 Q2 FY2025 Q3 FY2025 Q4 Amount vs net sales(%) Amount vs net sales(%) Amount vs net sales(%) Amount vs net sales(%) Net sales 6,835 13,897 21,636 34,322 Gross profit 2,784 40.7 5,124 36.9 7,975 36.9 11,672 34.0 Selling, general & administrative expenses 1,524 22.3 3,093 22.3 4,722 21.8 7,141 20.8 Operating profit 1,259 18.4 2,031 14.6 3,253 15.0 4,530 13.2 Ordinary profit 1,221 17.9 1,985 14.3 3,212 14.8 4,494 13.1 Net profit attributable to Seibu Giken Co., Ltd. stockholders 924 13.5 1,496 10.8 2,414 11.2 3,455 10.1 Net profit per share (JPY) 45.23 74.06 120.21 172.51 EBITDA*1 1,485 2,494 3,954 5,511 EBITDA margin*2（％） 21.7 18.0 18.3 16.1 *1: EBITDA = unaudited figures calculated by operating income + depreciation *2: EBITDA margin = EBITDA/ sales 22
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. FY2025 Quarterly Net Sales by Product and business (JPY: Millions) FY2025 Q1 FY2025 Q2 FY2025 Q3 FY2025 Q4 Desiccant dehumidifier 3,477 6,888 10,769 19,700 VOC concentrator 2,346 5,386 7,959 9,863 Others 1,011 1,621 2,906 4,758 Total 6,835 13,897 21,636 34,322 Product (JPY: Millions) FY2025 Q1 FY2025 Q2 FY2025 Q3 FY2025 Q4 Core Business : Selling module/equipment 5,007 9,518 14,466 22,652 Growth Business : Total engineering 1,828 4,378 7,169 11,670 Total 6,835 13,897 21,636 34,322 Business 23
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. FY2025 Quarterly Net Sales by Region (JPY: Millions) FY2025 Q1 FY2025 Q2 FY2025 Q3 FY2025 Q4 Japan 3,122 7,130 10,695 15,639 China 1,431 2,738 4,194 5,740 Korea 214 459 1,013 2,561 Other Asia 468 971 1,642 2,280 Europe 949 1,649 2,656 3,521 U.S. 296 448 805 3,706 Other North America 95 164 260 409 Others 256 334 367 463 Total 6,835 13,897 21,636 34,322 24
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. FY2025 Quarterly Order Intake and Backlog (JPY: Millions) FY2025 Q1 FY2025 Q2 FY2025 Q3 FY2025 Q4 Desiccant dehumidifier 4,092 15,536 19,250 22,373 VOC concentrator 1,640 4,768 6,261 7,912 Others 607 1,236 2,108 3,021 Total 6,340 21,541 27,621 33,307 (JPY: Millions) FY2025 Q1 FY2025 Q2 FY2025 Q3 FY2025 Q4 Desiccant dehumidifier 9,064 17,038 16,989 11,302 VOC concentrator 4,571 4,620 3,631 3,580 Others 2,878 2,977 2,566 1,657 Total 16,514 24,636 23,186 16,540 Order Intake Order Backlog 25
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. C op yri gh t @ 2 0 2 6 SE IB U GIKE N C O. , LTD. All R i gh t s R eserved . Progress Update Medium -Term Management Plan 2024-2026
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. Positioning of This Mid -Term Management Plan 27 Continue to be the innovation leader in air processing technology to realize a climate-neutral future Phase 1 Build a foundation for growth Building a foundation for sustainable growth for the next 3 years as the first phase toward the realization of 2030 Vision 28,725 32,069 34,322 36,000 55,000 0 50,000 100,000 2023 2024 2025 2026E 2030E Mid-Term Management Plan 2024-2026 Phase 2 Stabilize growth business Phase 3 Realize our vision Mid-Term Management Plan 2027-2029 Mid-Term Management Plan 2030-2032 12% 15％ 13％ (Millions of yen) FY2023 results Operating profit margin 15.0% EBITDA margin 18.1% ROE 15.4% 17% or more 21% or more 18% or more • Expand market share in core businesses • Scale up growth business • Strengthen group governance • Ensure stable profitability from growth business • Reap the return of investment • Ensure sustainable management aligned with growth industries • Maintain the consolidated operating profit over JPY9 bn (Revised February 14, 2025)
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. ⚫ Gain market share of desiccant dehumidifier in areas where investment is thriving (Japan, U.S. & Europe) ⚫ Improve competitiveness by increasing production capacity with capital investment in target region ⚫ Approach to emerging markets such as Southeast Asia and India ⚫ Expand overseas service business by stimulating demand for rotor replacement Target Growth Strategy Priorities Growth Driver Core Business : Selling module/equipment Growth Business : Total engineering Core Business Growth Business ⚫ Expand total engineering business in overseas (U.S. & Korea) ⚫ Establish a future stable earnings base by initiating service and maintenance business Energy device Aiming at sustainable profit growth by gaining market share in our core businesses in Europe and North America and by expanding total engineering business Module/equipment contributing to the optimal manufacturing environment and reduction of environmental impact for customers Proposal, design, fabrication, construction, etc. of systems for optimal space creation Semiconductor, Semiconductor Materials Battery (EV batteries, Stationary storage batteries, next generation batteries ) Other than batteries (Lithium-ion capacitors, perovskite solar cells） 28
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. FY2024 Actual FY2025 Actual FY2026 Forecast FY2026 Target （Revised 2025） Net sales (Million of yen) 32,069 34,322 36,050 36,000 Operating profit margin (%) 12.6 13.2 11.2 12 EBITDA margin (%) 15.6 16.1 14.6 15 ROE (%) 11.8 11.1 11.8 13 ・In 2025, profits exceeded the forecast due to steady sales growth, a better-than-anticipated gross profit margin, and the fact that some initially projected expenses (human capital investments) were not fully incurred (expected to be recorded in 2026). ・In 2026, while gross profit is expected to increase due to sales growth, the gross profit margin is expected to decrease amid a challenging business environment. Furthermore, the operating profit margin is expected to decrease due to increased investments in human capital and IT for growth. Financial KPI of This Mid -Term Management Plan 29
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. Market Outlook Trends EV battery Global EV demand slowdown leads to investment stagnation, but Japan's current investments are proceeding as planned EV battery (next-generation battery) Development of solid-state batteries through public-private partnerships is accelerating in various countries Storage battery for stationary applications Increase in demand for self-consumption and as a supply-demand adjustment resource. Energy devices other than batteries Lithium-ion capacitor : Increase in demand for data centers and semiconductor factories. Perovskite solar cells : In Japan, a development and investment plan supported by the government was announced as a pillar of renewable energy Semiconductor Semiconductor Materials The expansion of data center investment, driven by the proliferation of generative AI, is powerfully boosting demand. Business Environment Surrounding Our Growth Areas 30
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. 1. Core Business: Desiccant Dehumidifier Order received for Perovskite Solar Cell factory project Order received for desiccant dehumidifiers for a perovskite solar cell factory in Japan. (Approx. JPY 400 mn) Increased production capacity 2. Core Business: VOC Concentrator VOC Concentration cassettes for semiconductor foundries (VOC removal) orders continue to be strong Promoted VOC concentration rotor replacement Efforts in VOC concentration rotor Efforts in dehumidification rotors Steadily received orders of EV battery-related projects in Japan （2025年実績等アップデートは下線部） ◼ Market penetration of high-performance dehumidification rotors ◼ Cost reduction through simplification of the design and structure of existing dehumidification rotors ◼ Preparing for Dehumidifier Rotor Replacement Demand (China, Europe) ◼ Reduce costs through design and simplified structure of VOC concentration rotors ◼ Number of replacements: Year-on-year: 111.3% ◼ Construction of a new factory in China (to increase in-house production rates through in-house sheet metal processing) ・Construction started in Oct. 2025, with completion scheduled for Oct. 2026 Medium -Term Management Plan 2024 -2026 Progress (2025 actual results and other updates are underlined) ◼ Strengthened overseas assembly factories ・U.S. factory started operation in Feb. 2024; expanded Poland factory to start operation in Mar. 2024 ◼ Construction of a new dehumidifying rotor factory in Japan ・Construction started in Oct. 2024 ・Completion in October 2025 ・Scheduled to begin operations in the latter half of 2026 Increased production capacity ◼ Construction of a new factory in China (same as on the left) (to increase in-house production rates through in-house sheet metal processing) ◼ Exhaust treatment of tire manufacturing process ◼ Treatment of new hardly dissolving solvent of semiconductor manufacturing process ◼ Significant expansion of ship coating Development of new applications 31
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. 3. Growth Business: Engineering Business Global expansion of total engineeringExpansion of total engineering in Japan Future Initiatives ・Order received for solvent recovery equipment* for a new Indian plant for leading Indian automotive battery manufacturer.（Approx. JPY 1.06 bn） ・Established a capital alliance with KUMYOUNG ENG Co., Ltd., a Korean company with a solid track record in the construction of machinery and equipment in North America and Europe and set up a joint venture ⇒Striving to expand the engineering business through synergy with KUMYOUNG ENG Co., Ltd., which has strengths in construction works of dry rooms and clean rooms overseas ・Order received for factory architectural design, facility design, construction management work*, air-conditioning equipment works, dry room works, charging and discharging device (aging process)* for a Hybrid Super Capacitor* factory for Japanese Capacitor manufacturer.（Approx. JPY 4.83 bn） ・Order received for inert gas environment enclosure construction work for a lithium-ion battery factory for major Japanese automaker（Approx. JPY 820 mn） ・Focus on acquiring solvent recovery equipment projects in Europe and other regions ・Re-allocate human resources within the Group to growth businesses （2025年実績等アップデートは下線部） Hybrid Super Capacitor: Hybrid Super Capacitors (HSC) are high-performance energy storage devices that combine electric double layer capacitors (EDLC) for the positive electrode and lithium- ion batteries for the negative electrode. HSC is expected to find applications in various fields where high energy density and high output density are required. Construction Management: A construction manager acts in the contractee’s interest, managing a construction project from start to finish to achieve the project’s goals and requirements. charging and discharging device (aging process): Among the manufacturing processes of energy devices such as lithium-ion batteries and capacitors, this device is used in the aging process to evaluate performance by performing charging and discharging. This new product stabilizes the physical characteristics of the product by evenly applying overheated air to the product as a heat load, and checks for defective parts. Solvent Recovery Equipment: It is a device that adsorbs organic solvents inside the honeycomb, cools and condenses them, and recovers them as a liquid. Our unique circulation system allows for greater energy savings than conventional collection methods. In recent years, it has been attracting attention for its use in recovering organic solvents used in the electrode manufacturing process of lithium-ion batteries and adopted as a device capable of reducing environmental impact. Inert gas environment enclosure: Enclosure to ensure product quality and safety from unwanted reactions such as oxidation and hydrolysis by locally sealing manufacturing equipment by replacing air containing reactive gases such as oxygen with inert gases such as nitrogen. Medium -Term Management Plan 2024 -2026 Progress (2025 actual results and other updates are underlined) 32
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. Efforts in new product “C -SAVE Green” (launching in 2024) Atmospheric carbon dioxide (CO2) concentration and supplying equipment for greenhouse Received the Tokyo Governor's Award at the 50th Invention Awards The 50th Invention Awards (2025), co-hosted by the Japan Institute of Invention and Innovation and the Nikkan Kogyo Shimbun, recognized our company with the Tokyo Governor's Award. Benefits ・Increase in yield - Verified by test with strawberry cultivation in elevated beds ・Reduce environmental impact - Supply safe and clean CO2 at normal temperatures without using fossil fuels ・Easy to handle - No fuel supply or gas replacement required as capturing CO2 from the atmosphere. Easy installation. New business targeting agriculture (greenhouse) Promoting C-SAVE Green® and energy-saving ventilator (Green Save), aim at generating JPY 1 bn in 2027 Comparison of High- Bed Strawberry Yields Initiatives during the Medium-Term Management Plan 2024-2026 ⚫ Initiatives for Mass Production ⚫ Initiatives for Cost Reduction ⚫ Efforts in Overseas Expansion Field trials commence at Wageningen University & Research (WUR) in the Netherlands 33
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. Development of CO2 Adsorption Rotors Initiatives during the Medium-Term Management Plan 2024-2026 ⚫ Joint research with universities ⚫ Adsorbs and desorbs CO2 with low energy consumption ⚫ Improved endurance ⚫ Expansion into DAC (Direct Air Capture) and air conditioning applications Achieve closed-greenhouse* operation from autumn to spring with a total heat exchange rotor *Greenhouse in a closed state Initiatives during the Medium-Term Management Plan 2024-2026 ⚫ Field trial in strawberry greenhouse ⚫ Patent registrations: 1, Patent applications: 3 For DAC For agriculture For Air conditioning R&D: Technological development to reduce CO 2 34
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. ･Priorities are placed on investment to increase production capacity, improve productivity, and expand business areas for future growth ･Shareholder returns are principally based on dividends, and share buybacks are implemented in line with profit growth and capital efficiency Capital Allocation Plan (3 years: FY2024-FY2026) Operating Cash Flow JPY 13.0 bn Investing Cash Flow JPY 6.0 bn or more Increase production capacity ・Construction of a new dehumidifying rotor factory in Japan (approx. JPY 0.5 bn as additional costs) Improve productivity ・Construction of a new sheet metal factory in China (approx. JPY 2.0 bn) ・Consistent improvement of productivity (approx. JPY 2.0 bn) Invest to expand business domains ・Investment to expand engineering business, etc. (approx. JPY 1.0 bn or more, including alliances and M&As) Shareholder Returns JPY 6.0 bn or more ⚫ Target dividend payout ratio: 40% or higher ⚫ Share buybacks: • Execute share buybacks in a flexible manner, taking into account capital efficiency, financial results, and capital conditions • JPY 2.0 bn planned during the current Medium-Term Management Plan period を Cash Allocation (2024 -2026) Operating CF JPY 13.0 bn Shareholder returns JPY 6.0 bn or more Investment for growth JPY 6.0 bn or more 35
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. C op yri gh t @ 2 0 2 6 SE IB U GIKE N C O. , LTD. All R i gh t s R eserved . Company overview / Business overview
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. Corporate Profile Company name Seibu Giken Co., Ltd. Incorporation President Number of employees Address July 1965 Fumio Kuma Non-consolidated: 415 Consolidated: 785 (as of December 31, 2025) Developing, manufacturing, selling, and providing maintenance services for desiccant dehumidifiers and VOC concentrators, etc. Business Activities 3108-3 Aoyagi, Koga-shi, Fukuoka, JAPAN 37 Corporate Philosophy Group Philosophy China - Seibu Giken (Changshu) Co., Ltd. - Seibu Giken DST China (Changshu) Co., Ltd. Europe - Seibu Giken DST AB (Sweden) - Seibu Giken DST Poland SP. ZO.O. North America - Seibu Giken America, Inc. - Seibu Giken DST America, Inc. - Seibu Giken & Kumyoung Environment, Inc. Korea - Seibu Giken Korea Co., Ltd. Thailand - Seibu Giken (Thailand) Co., Ltd. Others - Seibu Giken DR Engineering Co., Ltd. Group Subsidiaries By appreciating the originality and creativity of each individual’s and simultaneously integrating them at every phase/dimension of development, we continuously create new value. Creation and Fusion Purpose Provide green air solutions for every environment. Vision To realize a climate-neutral future by being a leading innovator in air treatment technology. Core Values Achievement Accomplish the decisions made to achieve the goals. Unity Work to build teams to achieve sustainable growth. Exploring Create new value by combining social trends with original technologies. Collaboration Respect diversity to maximize output. Agility Take speedy action against unpredictable changes and unexpected problems.
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. 西部技研のあゆみ “By appreciating the originality and creativity of each individual and simultaneously integrating them at every phase/dimension of development, we continuously create new value” Ahead of the SDGs, Monozukuri(manufacturing) which contributes to society is in our DNA. The Seibu Technology Research Institute Co., Ltd., Seibu Giken's predecessor, was established in 1965. Toshimi Kuma, the founder 1965 –1970s 1980 ~ 1990s 2000s 2010s 2020s 1965 Established Seibu Giken Technology Research Co., Ltd 1993 Acquired DST Sorption Teknik in Sweden 2001 Established SG America in the US 2007 Established SG (Changshu) in Changshu- city, China 2009 Established DST China 2012 Established DST America in the US 2013 Established SG DST Poland 2019 Established SG Korea 2020 Munakata Factory built 2023 Listed on the Tokyo Stock Exchange Standard Market 2025 Established Seibu Giken Thailand Group History 1965～1983 Developed functional honeycomb forming technology 1984～1999 Introduced core products worldwide 2000～2009 Established integrated business from development, production to installation, after-sales service 2010～2019 Strengthened global sales network 2020～ Expanding to advanced technology industries ✓ In 1974, developed our honeycomb forming technology and commercialized the first enthalpy wheel in Japan ✓ Started supplying honeycomb rotors to equipment manufacturers ✓ Commercialized desiccant rotor with silica gel in 1984 ✓ Commercialized VOC concentration rotor with synthetic zeolite adsorbent in 1988 ✓ Started selling own brand’s finished products in the 2000s ✓ Started business directly to contractors and end-users ✓ Established overseas offices to provide intensive support ✓ Started the system solution business from 2010 ✓ Targeting advanced technology industries such as rechargeable batteries and semiconductors ✓ Increasing production capacity to meet growing demands in China, EU, and the U.S., 38
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. 39 Sales and after-sales service for specialized air treatment equipment such as Desiccant dehumidifier and VOC concentrator Total engineering services including system proposal, design, manufacturing, and construction for creating optimal spaces We provide environmentally friendly air treatment solutions around the world. Our Business Sales by Product Desiccant dehumidifier JPY 19.7 bn (57.4%)VOC concentrator JPY 9.8 bn (28.7%) Others JPY 4.7 bn (13.9%) FY2025 JPY 34.3 bn Other Asia JPY2.2 bn (6.46) Sales by Region China JPY5.7 bn (16.7%) Overseas sales JPY18.6 bn (54.4%) Korea JPY2.5bn (7.5%) Japan JPY15.6 bn (45.6%) Europe JPY3.5 bn (10.3%) USA JPY3.7 bn (10.8%) Others JPY0.4 bn (1.4%) FY2025 JPY 34.3 bn FY2025 JPY 34.3 bn Total engineering JPY 11.6 bn (34.0%) Sales by Business Selling module/equipment JPY 22.6 bn (66.0%)
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. Business Overview (1) Our Products Sales Composition (FY2025) 57.4% Sales Composition (FY2025) 28.7% Sales Composition (FY2025) 13.9% Desiccant Dehumidifier VOC Concentrator (VOC Removal / Solvent Recovery) Other Products ⚫ A European competitor (manufacturer) has a leading share in the global market. We understand that we are the second largest. ⚫ Capable of dehumidifying in the environment at 15°C or lower temperature, which cannot be achieved by the conventional refrigerant dehumidifier ⚫ Differentiate ourselves from competitors with our total engineering covering design and construction work of dry rooms, essential for production processes for Lithium-ion batteries and other energy devices JPY 18.5 bn JPY 19.6 bn JPY 19.7 bn 2023 2024 2025 Grow along with the energy device market Grow along with the semiconductor and energy device market Growth in Total Heat Exchanger and Construction Management EV battery factories Lithium-ion capacitor factory Perovskite solar cell factory Food Pharmaceuticals Painting Printing Semiconductor Semiconductor material EV battery factories Tire Manufacturing Buildings Research facilities Hospitals Commercial facilities Public facilities GX of factories General air condition ing ⚫ A leading share in the global market ⚫ Grow as solvent recovery equipment for the lithium-ion battery manufacturing process, in addition to existing applications such as exhaust gas treatment for semiconductor/semiconductor material plants and degassing and deodorizing treatment for printing and painting plants ⚫ Grow along with the growth of the energy device market going forward, as higher recovery rates and lower running costs can be expected from replacement from the existing wet-type to our dry and circulating type ⚫ Our total heat exchangers have a leading share in the domestic market ⚫ Will continue to progress steadily, as these devices are used universally for general air conditioning facilities in buildings, plants, hospitals, etc. ⚫ Growing sales from 'Construction Management' services overseeing manufacturing environment setup during factory construction Honeycomb filter Total heat exchanger JPY 7.3 bn JPY 9.5 bn JPY 9.8 bn 2023 2024 2025 JPY 2.8 bn JPY 2.8 bn JPY 4.7 bn 2023 2024 2025 40
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. Business Overview (2) Net Sales by Business (Core Business and Growth Business) Core Business: Selling module/equipment Growth Business: Total engineering Segment 2024 Net Sales (JPY: bn) 2025 Net Sales (JPY: bn) Desiccant dehumidifier 15.0 12.9 VOC concentrator 6.2 6.4 Other 2.7 3.2 Segment 2024 Net Sales (JPY: bn) 2025 Net Sales (JPY: bn) Desiccant dehumidifier 4.5 6.7 VOC recovery equipment 3.3 3.4 Other 0.1 1.5 <Change factor analysis> Declined due to decreased sales of desiccant dehumidifiers JPY 24.0 bn JPY 22.6 bn FY2024 FY2025 <Change factor analysis> Total engineering business expands in energy device projects and semiconductor material projects. Total of design, construction, and engineering businesses FY2026 forecast JPY 23.2 bn Total of machinery/devices sales and ancillary maintenance services JPY 8.0 bn JPY 11.6 bn FY2024 FY2025 FY2026 forecast JPY 12.7 bn 41
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. C o r e B u s i n e s s Selling module/equipment Construction work of air conditioning facilities including dry air conditioning work G r o w t h B u s i n e s s Total Engineering Total engineering projects in the works expected to be received in 2025 onward (as of January 2025) Providing a total optimal environment for battery and semiconductor manufacturing processes Combining the strength of our unique products with outstanding environmental engineering, Seibu Giken provides the world with air solutions that only we can create! JPY 32.0 bn 2024 成長戦略について Growth Strategy ■Major capacitor manufacturers JPY 20.0 bn ■Major battery manufacturers JPY 20.0 bn ■Automakers in Japan JPY 15.0 bn Enables us to perform highly sophisticated construction management with excellent proposal capabilities ●Expansion of production factories (in Japan and overseas) From 2026 onwards ●Establishment of Seibu Giken Battery Laboratory Operation to start in 2026 ●Establishment of a building design office Operation to start in spring 2025 Conduct research of air more suitable for batteries by actually producing batteries Expand Munakata No.2 Factory and production factories in Asia to address continued supply shortages in the market. JPY 55.0 bn 2030 Start construction management work Strengthen total engineering in addition to selling module/equipment Service and MaintenanceManufacturing rotors Selling module/equipment 42
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. Technology of loading and supporting functional agents Add various functions by efficiently adding and supporting various functional agents such as catalysts, adsorbents, deodorizers, etc. to the honeycomb structure Apply to desiccant dehumidifiers, VOC concentrators, and total heat exchangers Our Strengths 1. Core technologies 43 Technology of forming honeycomb structure Capable of processing various materials, e.g., tissues and aluminum sheet, to form honeycomb structure 3 benefits of the honeycomb structure: 1) low pressure drop to air 2) high strength 3) a large surface area ◼ Control the quality of air passing through honeycomb structure ◼ Provide solution to various problems in the customers’ manufacturing/processing environment by adding functions to honeycomb structure DeodorizationHeat exchanging VOC adsorbingDehumidifying aluminum flameproof Silica gel adhered Adsorbent adhered VOCH2O Heat Odor
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. Equipment manufacturers Our Strengths 2. Integrated business from development to after -sales service 44 Handle everything from rotor development and manufacturing of rotor to manufacturing, Constructing of system and providing maintenance of final products. Provide installation, maintenance, and rotor replacement to maximize the performance of our products. ◼ Strengthen our competitiveness in developing products and sales activities based on customer needs collected directly from our customers by providing the integrated business Develop rotor, manufacture module products, and sell to equipment manufacturers. Capable of maintaining and replacing to our rotors even if a rotor from another company is in use. Desiccant dehumidifierVOC concentrator Manufacturing honeycomb Manufacturing rotor Manufacturing module product Assembly (Finished product) MaintenanceConstructing system
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. 1 4 ３ 1 1 Our Strengths 3. Global Network ◼ Rotor, the heart of our products, produced only in Japan and assembled at various manufacturing sites around the world ◼ Supply high-quality, high-performance products globally while responding quickly and flexibly to the needs of customers around the world Manufacturing sites in Europe Desiccant dehumidifier Manufacturing sites in China • Desiccant dehumidifier • VOC concentrator • Total heat exchanger Manufacturing sites in Japan • Rotor • Desiccant dehumidifier • VOC concentrator • Total heat exchanger Manufacturing site in the United States Total heat exchanger 4 domestic manufacturing sites 6 overseas manufacturing sites 45
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. ●Design and construction work of plant air environment including dry rooms utilizing existing products ●Capable of creating an all-in-one, well-coordinated, and optimal air environment with our own products Seibu Giken creates the entire air environment of a manufacturing plant. ●Selling dehumidifiers, VOC removal equipment and other machinery ●Product-out business ●Consulting on architectural design with priority on a plant’s production lines ●Architectural design and construction work through alliances with partner companies JPY 8.0 bn JPY 11.5 bn 2024 2025 Already received some orders for these types of projects as construction management work for 2025 onward Product-out + Market-inFuture Focusing on solution proposalsPresent Product-outPast Sales of total engineering Order value per project tends to increase due to expanded business scope JPY 12.7 bn 2026 Forecast Our Strengths 4. Total Engineering Dry room *Construction Management (CM) work Refers to work in which, while maintaining technological neutrality, a construction manager acts in the contractee’s interest at each step of the designing, ordering and construction process, performing all or a part of the management work such as design reviews and work order method reviews, process management, quality management, and cost management. 46
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. Seibu Giken's total engineering can cut energy consumption through proper energy management 出Source: ”Lithium-ion Vehicle Battery Production Status 2019 on Energy Use, CO2 Emissions, Use of Metals, Products Environmental Footprint, and Recycling” ivl & Swedish Energy Agency (2019) In Japan, which depends on overseas energy resources, it is essential to reduce production costs by reducing energy inputs Seibu Giken Total Engineering (1) -Lithium-ion battery manufacturing process- －Energy is used to produce energy. We aim to resolve this contradiction (energy-reducing technology)－ Largest issue for production in Japan Composition of energies consumed for cell production Consumption for coating drying/dry room is 80% or more Lithium burns intensely with a small amount of moisture. Therefore, the production process requires a dry environment. 局所ドライブ ースドライミニ エン Energy -saving outdoor AHU Local dry booth Dry room Local dry booth Purifier Desiccant dehumidifiers Solvent recovery equipment Equipped with column with built-in honeycombs Equipped with rotors Equipped with dehumidifying rotors Equipped with VOC rotors Assembly process Coating process Charging/discharging process Explosion -proof room Solvent tank 47
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. Outdoor air C r e a t e d b y a i r e x p e r t s Total engineering covering quality of air Provide a total solution to create an optimal environment where cleanliness, temperature, and moisture concentration in a clean room are carefully and precisely managed according to the customer’s needs Next-generation air conditioning with reduced energy consumption Under total engineering, energy generated from each device can be utilized and circulated efficiently, creating an energy -saving clean room in total, which cannot be easily achieved by ordering on a unit basis, to contribute to CO 2 reduction Creation of “Super clean room,” essential for semiconductor material manufacturing processes and various other fields Fan filter unit (FFU) VOC concentrator Purifier Air handling unit (AHU) Super clean room Mini enclosure Super clean room Equipped with column with built-in honeycombs Equipped with VOC rotors Seibu Giken Total Engineering (2) -Semiconductor material manufacturing process, etc.- 48
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. Development of oxygen concentrator Leading research on direct enrichment of oxygen contained in air using a honeycomb rotor is being conducted in an industry- academia-government collaboration. By introducing air with a higher concentration of oxygen into the combustor, combustion efficiency can be improved and fuel input can be reduced, with the aim of reducing CO2 emissions as a result. R&D: Technological development to reduce CO 2 Concentrate CO2 of low levels (about 10%) discharged from plants to medium (around 60%) to high concentration (over 90%) and recover. [Benefits] ・Quick startup ・Usable at atmospheric pressure ・Ensuring safety with no harmful materials Initiatives during the Medium-Term Management Plan 2024-2026 ⚫ Demonstration testing using combustion exhaust gas ⚫ Presentation of Industry-Academia Collaboration Outcomes Initiatives during the Medium-Term Management Plan 2024-2026 ⚫ Industry-academia collaboration for paper submission ⚫ Patent application: 1 Oxygen Concentrator TSA Demonstration Test Unit 49
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. Term Description Desiccant dehumidifier An absorption dehumidifier utilizing a dehumidifier rotor. Capable of more efficiently dehumidifying even in environments with low temperatures or low moisture levels in the air, compared with a cooling type dehumidifier. VOC Concentrator (exhaust gas removal) Volatile organic compounds (VOCs) are absorbed onto a VOC concentration rotor to detoxify exhaust gas containing VOCs. By concentrating low-concentration and high-volume VOC-containing exhaust gas, detoxification facilities including combustion equipment can be downsized, contributing to CO2 reduction and cost reduction through energy-saving. VOC recovery equipment (solvent recovery) VOCs are absorbed onto a concentration rotor to detoxify exhaust gas containing VOCs and exhaust is cooled and condensed with VOCs recovered as liquid. The recovered liquid is highly stable, lowering the purification load for recycling. This circulating energy-saving system contributes to energy efficiency and CO2 reduction. Dry room Offering a dry work space with a desiccant dehumidifier and enclosure. We offer integrated operation from the development and design of dehumidifiers to installation in rooms, thereby creating a highly efficient energy-saving system. Mini enclosure (Dry booth) Contributing to cost reduction resulting from space-saving by enclosing a limited area with production facilities, etc. In a dry booth (localized, high airtight enclosures and performing dehumidification), an environment meeting more demanding dehumidification requirements can be created within a dry room, etc. Energy-saving outdoor AHU An air conditioner that recovers the thermal energy of exhaust air with total heat exchange rotors and dehumidifies it with dehumidifying rotors, thereby enabling energy-saving outdoor air treatment. Our Value Proposition (Terms and description) (1) 50
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Copyright@ 2026 SEIBU GIKEN CO.,LTD. All Rights Reserved. Term Description Circulating Nitrogen Purifier Efficiently creating an environment with low oxygen and low moisture concentration through the combination of a purifier and dehumidifier. Clean room Offering an ISO-compliant clean environment (we can accommodate up to Class 1) to achieve the target cleanliness even when the equipment is in operation. CO2 concentration and supply equipment Contributing to increased harvests by concentrating CO2 in the air and supplying it to plants through Direct Air Capture (DAC) technologies. Total engineering Total provision of all or part of the proposal, designing, manufacturing, construction and other processes of a system to create an optimal manufacturing environment. Construction management While maintaining technological neutrality, a construction manager acts in the contractee’s interest at each step of the designing, ordering, and construction process, performing all or a part of the management work such as design reviews and work order method reviews, process management, quality management, and cost management. Fan filter unit (FFU) Equipment installed within the ceiling to supply clean air to maintain the cleanliness of a clean room Air handling unit (AHU) An air conditioner that takes in outside air and supplies air internally after adjusting the temperature, humidity, etc. Our Value Proposition (Terms and description) (2) 51