Sinovac Biotech is a China-based biopharmaceutical company that focus on the research, development, manufacture and commercialization of vaccines for infectious diseases, including Hepatitis A, Hepatitis B, Influenza, and SARS. The company offers Healive, an inactivated Hepatitis A vaccine and is developing Bilive, a combined Hepatitis A&B vaccine. It was founded in 2001 and is based in Beijing, China. Sinovac Biotech Co., Ltd. operates as a subsidiary of Sinovac Biotech Ltd.