Beijing Wantai Biological Pharmacy Enterprise Co., Ltd. engages in the research and development, production, and sale of in vitro diagnostic reagents and equipment, and vaccines. It operates through the In Vitro Diagnostic Reagents and Vaccines segments. The In Vitro Diagnostic Reagents segment covers human immunodeficiency virus and viral hepatitis reagents, and automatic tubular chemiluminescence immunoassay systems. The Vaccines segment offers recombinant hepatitis E, human papillomavirus, and freeze-dried live attenuated varicella vaccines. The company was founded on April 24, 1991 and is headquartered in Beijing, China.