[ChinaCache Announces Joint Venture with Henan Zhongfu Industrial Corporation BEIJING, January 15, 2016 — ChinaCache International Holdings Ltd. (“ChinaCache” or the “Company”) (Nasdaq: CCIH), the leading total solutions provider of Internet content and application delivery services in China, today announced that ChinaCache Xin Run Technology (Beijing) Co., Limited (“Xin Run”), in which ChinaCache holds 40% equity interest, has The JV] [001-34873 ChinaCache International Holdings Ltd. Section A, Building 3, Dian Tong Creative Square No. 7 Jiuxianqiao North Road, Chaoyang District Beijing, 100015 The People’s Republic of China +86 10 6437 3399 Form 20-F x o o o ChinaCache International Holdings Ltd.]

[ChinaCache Announces Share Buyback Program This new buyback program is in addition to the program previously approved and announced on December 18, 2014, which authorized the Company to repurchase ADSs not to exceed US$10 million in the aggregate and the program previously approved and announced on August 24, 2015, which authorized the Company to repurchase ADSs not to exceed US$6] [001-34873 ChinaCache International Holdings Ltd. Section A, Building 3, Dian Tong Creative Square +86 10 6437 3399 Form 20-F x o o o ChinaCache International Holdings Ltd. By : Name]

[ChinaCache Announces Definitive Agreements to Acquire ChinaCache Xin Run Funding Launches Beijing’s Largest Data Center and China’s First Internet Exchange BEIJING, December 2, 2015 - ChinaCache International Holdings Ltd. (“ChinaCache” or the “Company”) (Nasdaq: CCIH), the leading total solutions provider of Internet content and application delivery services in China, today announced ChinaCache also agrees not to engage in the Atecsys] [ChinaCache International Holdings Ltd. Announces Third Quarter 2015 Financial Results BEIJING — December 2, 2015 Highlights for the Third Quarter of 2015 · Net revenues · Gross profit · Adjusted EBITDA · Net loss attributable to ordinary shareholders “During the third quarter, we continued to focus on optimizing our platforms and the company-wide performance improvement for our CDN business. We] [001-34873 ChinaCache International Holdings Ltd. Section A, Building 3, Dian Tong Creative Square No. 7 Jiuxianqiao North Road, Chaoyang District Beijing, 100015 The People’s Republic of China +86 10 6437 3399 Form 20-F x o o o ChinaCache International Holdings Ltd.]

[ChinaCache International Holdings Ltd. Announces Second Quarter 2015 Financial Results BEIJING — August 20, 2015 Highlights for the Second Quarter of 2015 · Net revenues · Gross profit · Adjusted EBITDA · Adjusted net income · Non-GAAP basic and diluted earnings per ADS “During the first half of 2015, we made significant progress on several key fronts, including customer base] [ChinaCache Announces Share Buyback Program Both share buyback programs will be funded by the Company’s available cash balance. As of June 30, 2015, the Company had cash and cash equivalents of approximately US$104.8 million. About ChinaCache International Holdings Ltd. ChinaCache International Holdings Ltd. (Nasdaq:CCIH) is the leading total solutions provider of Internet content and application delivery services in China. As] [001-34873 ChinaCache International Holdings Ltd. Section A, Building 3, Dian Tong Creative Square No. 7 Jiuxianqiao North Road, Chaoyang District Beijing, 100015 The People’s Republic of China +86 10 6437 3399 Form 20-F x o o o ChinaCache International Holdings Ltd.]

[ChinaCache Announces Planned Departure of Dr . Ken Zhang BEIJING, “Ken has been a valued colleague and friend, and played a critical role in the Company’s successful business development and the formation of critical strategic partnerships,” said Mr. Song Wang, founder, chairman and CEO of ChinaCache. “We are grateful for Ken’s years of dedication to the Company, and wish him] [001-34873 ChinaCache International Holdings Ltd. Section A, Building 3, Dian Tong Creative Square +86 10 6437 3399 Form 20-F x Form 40-F o o o ChinaCache International Holdings Ltd.]