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Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement , make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement . CHINA TOWER 中国 铁塔 China Tower Corporation Limited 中國 鐵塔 股份有限公司 ( A joint stock company incorporated in the People's Republic of China with limited liability ) ( Stock Code : 0788 ) ANNOUNCEMENT OF 2021 INTERIM RESULTS Financial Highlights Operating revenue maintained healthy growth , reaching RMB42,673 million , up by 7.2 % , of which : • . Revenue from TSP business was RMB39,808 million , up by 4.5 % over the same period last year , of which , revenue from tower business was RMB37,722 million , up by 3.7 % ; revenue from indoor distributed antenna system ( " DAS ” ) business was RMB2,086 million , up by 21.3 % Revenue from trans - sector site application and information ( “ TSSAI ” ) business was RMB1,853 million , up by 46.6 % Revenue from energy business was RMB884 million , up by 180.6 % Site co - location efficiency improved continuously ; tower tenancy ratio increased from 1.66 at the end of 2020 to 1.68 . Operating efficiency enhanced steadily ; EBITDA² was RMB31,184 million . Profitability enhanced constantly ; profit attributable to owners of the Company was RMB3,457 million , up by 16.1 % . Cash flow remained sound and ample ; net cash generated from operating activities was RMB24,238 million ; free cash flow³ was RMB 13,878 million . Note 1 : Note 2 : Note 3 : The financial information mentioned in this announcement is prepared based on the consolidated financial information . The Company and its subsidiaries are collectively referred to as the Group . EBITDA is calculated by operating profit plus depreciation and amortization . Free cash flow is the net cash generated from operating activities minus the capital expenditures . 1