Hualan Bio was founded in 1992 and is the first company in China qualified for Good Manufacturing Practice certification. It has 28 subsidiary companies and is a publicly traded company that focuses on research, development, production, and marketing of human blood products, viral and bacterial vaccines, and recombinant biologics. Some of its major subsidiaries include Hualan Pharmaceutical Trade Co. which specializes in sales and distribution, Hualan Biological Engineering in Suzhou which integrates R&D, production and distribution of various biological products, and Hualan Biological Engineering in Chongqing which is the largest manufacturer of plasma derivatives in Asia.