[CONFIDENTIAL ChinaCache Appoints Dr. Bo Li as Chief Technology Consultant Beijing, July 18, 2011 — ChinaCache International Holdings Ltd. (“ChinaCache” or the “Company”) (NASDAQ: CCIH), the leading provider of Internet content and application delivery services in China, today announced that Dr. Bo Li, professor in the Department of Computer Science and Engineering at the Hong Kong University of Science and] [ChinaCache International Holdings Ltd. 6/F, Block A, Galaxy Plaza 10 Jiuxianqiao Road Middle, Chaoyang District Beijing 100015 The People’s Republic of China (86 10) 6437 3399 Form 20-F x Form 40-F o o o ChinaCache International Holdings Ltd.]

[ChinaCache Announces Results of 2011 Annual General Meeting BEIJING, July 12, 2011 (GLOBE NEWSWIRE) - ChinaCache International Holdings Ltd. (Nasdaq: CCIH), the leading provider of Internet content and application delivery services in China, today announced that its 2011 annual general meeting of shareholders was held in Hong Kong on July 12, 2011. About ChinaCache International Holdings Ltd. www.chinacache.com ChinaCache International] [ChinaCache International Holdings Ltd. 6/F, Block A, Galaxy Plaza 10 Jiuxianqiao Road Middle, Chaoyang District Beijing 100015 The People’s Republic of China (86 10) 6437 3399 Form 20-F x Form 40-F o o o ChinaCache International Holdings Ltd.]

[ChinaCache Appoints Jackie You Kazmerzak, CFA as Chief Financial Officer Announces CEO Share Purchase Program and Company Share Buyback BEIJING, June 13, 2011 — ChinaCache International Holdings Ltd. (“ChinaCache” or the “Company”) (Nasdaq:CCIH), the leading provider of Internet content and application delivery services in China, today announced that Jackie You Kazmerzak, CFA has been appointed Chief Financial Officer of the] [ChinaCache International Holdings Ltd. 6/F, Block A, Galaxy Plaza 10 Jiuxianqiao Road Middle, Chaoyang District Beijing 100015 The People’s Republic of China (86 10) 6437 3399 Form 20-F x Form 40-F o o o ChinaCache International Holdings Ltd.]

[ChinaCache to Hold 2011 Annual General Meeting on July 12, 2011 BEIJING, June 7, 2011 (GLOBE NEWSWIRE) — ChinaCache International Holdings Ltd. (“ChinaCache” or the “Company”) (NASDAQ: CCIH), the leading provider of Internet content and application delivery services in China, today announced that it will hold its 2011 annual general meeting of shareholders at 42/F, Edinburgh Tower, The Landmark, 15] [ChinaCache International Holdings Ltd Letterhead [ CHINACACHE INTERNATIONAL HOLDINGS LTD (Incorporated in the Cayman Islands with limited liability) (NASDAQ Ticker: CCIH) Notice of Annual General Meeting to be held on July 12, 2011 (or any adjourned or postponed meeting thereof) AGM Company NOTICE IS HEREBY GIVEN that an annual general meeting (the “ 1. To consider and, if thought fit,] [ChinaCache International Holdings Ltd Letterhead [ CHINACACHE INTERNATIONAL HOLDINGS LTD (Incorporated in the Cayman Islands with limited liability) (NASDAQ Ticker: CCIH) Form of Proxy for Annual General Meeting to be held on July 12, 2011 (or any adjourned or postponed meeting thereof) Introduction Company Ordinary Shares AGM This Form of Proxy is furnished in connection with the solicitation by the] [Annual General Meeting The Voting Instructions must be signed, completed and received at the indicated address prior to 2011 VOTING INSTRUCTIONS AMERICAN DEPOSITARY SHARES ChinaCache International Holdings Ltd. (the “Company”) ADS CUSIP No.: 16950M107. June 7, 2011. Meeting Specifics: Annual General Meeting on July 12, 2011 at 10:00 a.m., (Hong Kong time) at 42/F, Edinburgh Tower, 15 Queen’s Road Central,] [ChinaCache International Holdings Ltd. 6/F, Block A, Galaxy Plaza 10 Jiuxianqiao Road Middle, Chaoyang District Beijing 100015 The People’s Republic of China (86 10) 6437 3399 Form 20-F x Form 40-F o o o ChinaCache International Holdings Ltd.]

[ChinaCache International Holdings Ltd. Announces First Quarter 2011 Financial Results BEIJING — May 9, 2011 — ChinaCache International Holdings Ltd., (“ChinaCache” or the “Company”) (NASDAQ: CCIH), the leading provider of Internet content and application delivery services in China, today announced its unaudited interim condensed consolidated financial results for the quarter ended March 31, 2011. Highlights for First Quarter 2011 ·] [ChinaCache International Holdings Ltd. 6/F, Block A, Galaxy Plaza 10 Jiuxianqiao Road Middle, Chaoyang District Beijing 100015 The People’s Republic of China (86 10) 6437 3399 Form 20-F x Form 40-F o o o ChinaCache International Holdings Ltd. By :]