Changchun BCHT Biotechnology Co. Ltd., a biopharmaceutical company, engages in the research and development, production, and sale of human vaccines in China and internationally. Its products include live herpes zoster vaccine; live varicella vaccine; live, nasal, and freeze-dried influenza vaccine; and Rabies vaccine (vero cell) for humans. The company was founded in 2004 and is based in Changchun, China.