3SBio

3SBio is a China-based biopharmaceutical company focused on the research, development, manufacturing, and commercialization of biologic and other therapeutic products. The company is best known for marketed products in nephrology, oncology, autoimmune disease, and supportive care, including erythropoietin, granulocyte colony-stimulating factor, and thrombopoietin-related products. It also has antibody and biosimilar capabilities through subsidiaries such as Sunshine Guojian and maintains integrated manufacturing and commercial operations in China. The name "3S Pharmaceutical Group" appears to refer to 3SBio, which is the commonly used English corporate name and public-market identity. The company is publicly traded in Hong Kong and operates as an established commercial-stage biopharma rather than an early-stage development company.