Ticker: VNET, Company: 21Vianet Group, Inc., Type: SC 13G/A, Date: 2013-02-06
Original SEC Filing: Click here

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Webplus: VNET/20130206/SC_13G.A/2_EX-99.1/000.htm SEC Original: d477346dex991.htm
JOINT FILING AGREEMENT Dated: February 6, 2013 ATRIX ARTNERS HINA M Matrix China Management I, L.P. Matrix China I GP GP, Ltd. David Su Director ATRIX ARTNERS HINA M Matrix China Management I, L.P. Matrix China I GP GP, Ltd. David Su Director ATRIX HINA ANAGEMENT M Matrix China I GP GP, Ltd.

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Webplus: VNET/20130206/SC_13G.A/1/000.htm SEC Original: d477346dsc13ga.htm
CUSIP No. 90138A 10 3 1. Names of Reporting Persons Matrix Partners China I, L.P. 2. Check the Appropriate Box if a Member of a Group (See Instructions) ¨ (a) ¨ (b) 3. SEC Use Only 4. Citizenship or Place of Organization

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Company Information:

Ticker: VNET, Company: 21Vianet Group, Inc., Type: SC 13G/A, Date: 2013-02-06CIK: 0001508475, Location: F4, SIC: 7370, SIC Desc: SERVICES-COMPUTER PROGRAMMING, DATA PROCESSING, ETC.
Business Phone & Address:
M5, 1JIUXIANQIAO EAST ROAD
Beijing 100016