3SBio, Inc. operates as an investment holding company, which engages in the development, production, marketing, and sale of biopharmaceutical products. Its products are used in the field of medicine, particularly in nephrology, oncology, supportive cancer care, inflammation, and infectious diseases. It operates through the Mainland China and Others geographical segments. The company was founded by Jing Lou and Dan Lou in 1993 and is headquartered in Shenyang, China.