[JOINT FILING AGREEMENT Dated: February 16, 2010 STARR INVESTMENTS CAYMAN II, INC. Michael J. Horvath Director STARR INTERNATIONAL CAYMAN, INC. Michael J. Horvath Director STARR INTERNATIONAL INVESTMENTS LTD. Stuart Osborne] [* The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page. ubj 1 ’ This CUSIP number applies to the Issuer 1]

[1 CUSIP NO. 206277 105 Schedule 13G Page of [INSERT PAGE NUMBER] Pages 1 NAME OF REPORTING PERSON Grand Best Group Limited 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP]

[JOINT FILING AGREEMENT NOTABLE ENTERPRISE LIMITED BONA LAU] [1 CUSIP NO. 206277 105 Schedule 13G Page of [INSERT PAGE NUMBER] Pages 1 NAME OF REPORTING PERSON Notable Enterprise Limited 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP 3 SEC USE ONLY]

[JOINT FILING AGREEMENT CAGP Ltd. CAGP General Partner, L.P. Carlyle Asia Growth Partners III, L.P. CAGP III Co-Investment, L.P.] [SCHEDULE 13G (Rule 13d-102) (Amendment No. ____) * Concord Medical Services Holdings Limited (Name of Issuer) Ordinary Shares, par value US$0.0001 per share (Title of Class of Securities) 1 206277 105 (CUSIP Number) December 31, 2009 (Date of Event Which Requires Filing of this Statement) *The remainder of this cover page shall be filled out for a reporting person’s initial]