Vimicro International Corp., a fabless semiconductor company, announced the appointment of David Tang as chief financial officer (CFO) and vice president effective Aug. 1, 2008. Tang replaces Quincy Tang, who will leave the company July 31. Prior to joining Vimicro, David Tang served as the CFO of China-based CNinsure Inc. Prior to that he served as CFO for both the IRICO Group, a Hong Kong and China listed company, and Chinasoft International, a Hong Kong listed company. Prior to those positions, he was an equity research analyst at Merrill Lynch & Co. in New York.