3SBio Inc. is a biotechnology company in the People's Republic of China with research and development, manufacturing, and marketing capabilities focusing on bio-pharmaceutical products. The Company recombinant, or genetically engineered, protein-based products and product candidates are designed to address markets with unmet medical needs in nephrology, oncology, supportive cancer care, inflammation and infectious diseases. Its principal products are EPIAO and TPIAO. In addition, it has two legacy products, Intefen and Inleusin; and an in-licensed product, Iron Sucrose Supplement. The Company focuses on its research and development efforts on both novel and validated protein-based therapeutics for the treatment of diseases in the areas of nephrology, oncology, supportive cancer care, inflammation and infectious diseases, and other selected areas. As of December 31, 2011, a new indication for its TPIAO to treat idiopathic thrombocytopenic purpura is approved for manufacturing.