[CUSIP No. 169379104 Agreement of Joint Filing VERTEX TECHNOLOGY FUND (III) LTD Dated: February 10, 2009 Chua Joo Hock Director VERTEX MANAGEMENT (II) PTE LTD Dated: February 10, 2009 Chua Joo Hock Director VERTEX VENTURE HOLDINGS LTD Dated: February 10, 2009 Chua Kee Lock Director] [CUSIP No. 169379104 1 NAMES OF REPORTING PERSONS 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP o (a) þ (b) 3 SEC USE ONLY 4]
[CUSIP No. G6647N108 1 NAMES OF REPORTING PERSONS 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A o (a) o (b) 3 SEC USE ONLY 4 CITIZENSHIP OR PLACE OF ORGANIZATION 5 SOLE VOTING POWER NUMBER OF 3,954,750 ordinary shares whichnsists of (i) 3,915,750 shares held directly by Chung Lau and (ii) 39,000 shares] [[Remainder of this page has been left intentionally blank.] James Jianzhang Liang James Jianzhang Liang Chung Lau Chung Lau c80880exv1.htm 2 EX-1]
[CUSIP No. 169379104 Agreement of Joint Filing VERTEX TECHNOLOGY FUND (III) LTD Dated: February 10, 2009 Chua Joo Hock Director VERTEX MANAGEMENT (II) PTE LTD Dated: February 10, 2009 Chua Joo Hock Director VERTEX VENTURE HOLDINGS LTD Dated: February 10, 2009 Chua Kee Lock Director] [CUSIP No. 169379104 1 NAMES OF REPORTING PERSONS 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP o (a) þ (b) 3 SEC USE ONLY 4]
