Ticker: VNET, Company: 21Vianet Group, Inc., Type: SC 13G, Date: 2012-02-06
Original SEC Filing: Click here

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Webplus: VNET/20120206/SC_13G/2_EX-99.I/000.htm SEC Original: ex-i.htm
JOINT FILING AGREEMENT Dated: February 2, 2012 Matrix Partners China I, L.P. David Su Director Matrix Partners China I-A, L.P. David Su Director Matrix China Management I, L.P. David Su Director Matrix China I GP GP, Ltd. David Su

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Webplus: VNET/20120206/SC_13G/1/000.htm SEC Original: t72468_sc13g.htm
SCHEDULE 13G (Rule 13d–102) (Amendment No. _________) * 21Vianet Group, Inc. (Name of Issuer) Class A Ordinary Shares, par value US$0.00001 per share (Title of Class of Securities) 90138A 10 3 (CUSIP Number) December 31, 2011 (Date of Event Which Requires Filing of this Statement) o Rule 13d-1(b) o Rule 13d-1(c) x Rule 13d-1(d) *The remainder of this cover page

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Company Information:

Ticker: VNET, Company: 21Vianet Group, Inc., Type: SC 13G, Date: 2012-02-06CIK: 0001508475, Location: F4, SIC: 7370, SIC Desc: SERVICES-COMPUTER PROGRAMMING, DATA PROCESSING, ETC.
Business Phone & Address:
M5, 1JIUXIANQIAO EAST ROAD
Beijing 100016