September 3, 2010 -- Chongqing Zhifei Biological Products, which focuses on vaccines and biological products, plans to issue 40 million shares in an IPO on Shenzhen’s GEM exchange. The company hopes to raise 625 million RMB ($92 million), implying a price of 15.625 RMB per share. The final price and initial trading date will be set later. More details....