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世纪 互联 VNET 21Vianet Group , Inc. Reports Unaudited Second Quarter 2021 Financial Results BEIJING , Aug. 25 , 2021 ( GLOBAL NEWSWIRE ) -- 21Vianet Group , Inc. ( Nasdaq : VNET ) ( " 21Vianet " or the " Company " ) , a leading carrier- and cloud - neutral Internet data center services provider in China , today announced its unaudited financial results for the second quarter ended June 30 , 2021. The Company will hold a conference call at 8:00 P.M. on Tuesday , August 24 , 2021 , U.S. Eastern Time to discuss the financial results . Dial - in details are provided at the end of this release . Second Quarter 2021 Financial Highlights Net revenues in the second quarter of 2021 increased by 30.8 % to RMB1.50 billion ( US $ 231.9 million ) from RMB1.14 billion in the same period of 2020 . ● ● Adjusted EBITDA ( non - GAAP ) in the second quarter of 2021 increased by 38.7 % to RMB425.1 million ( US $ 65.8 million ) from RMB306.4 million in the same period of 2020. Adjusted EBITDA margin ( non - GAAP ) in the second quarter of 2021 was 28.4 % , compared to 26.8 % in the same period of 2020 . Second Quarter 2021 Operational Highlights Adjusted cash gross profit ( non - GAAP ) in the second quarter of 2021 increased by 36.9 % to RMB640.2 million ( US $ 99.2 million ) from RMB467.6 million in the same period of 2020. Adjusted cash gross margin ( non - GAAP ) in the second quarter of 2021 was 42.8 % , compared to 40.9 % in the same period of 2020 . ● Total cabinets under management net increased by 6,950 to 62,876 , as of June 30 , 2021 , compared to 55,926 as of March 31 , 2021 , and 44,050 as of June 30 , 2020 . Retail IDC MRR¹ per cabinet was RMB9,015 , compared to RMB8,953 in the same period of 2020 and RMB9,144 in the first quarter of 2021 . Compound utilization rate was 59.9 % , compared to 61.7 % in the first quarter of 2021 . O Utilization rate for mature IDCs , which consisted of IDC deliveries prior to and during 2019 , was 76.3 % , compared to a utilization rate for mature IDCs of 73.9 % in the first quarter of 2021 . O Utilization rate for ramp - up and newly - built IDCs , which consisted of IDC deliveries in 2020 and 2021 , was 29.2 % , compared to a utilization rate for ramp - up and newly - built IDCs of 30.6 % in the first quarter of 2021 . Mr. Samuel Shen , Chief Executive Officer and Executive Chairman of Retail IDC , stated , " We are delighted to report another strong quarter . Our dual - core growth engine , diversified customer base , and strong IDC market demand continued to fuel organic growth in our cabinet deliveries for the first half of 2021. Based on our leading market position and dual - core growth engine of retail and wholesale IDC 1 Retail IDC MRR : Refers to Monthly Recurring Revenues for the retail IDC business . 1