Sunshine Guojian Pharmaceutical (Shanghai) Co., Ltd. is an innovative biopharmaceutical entity in China, engaged in the comprehensive process of discovering, developing, manufacturing, and commercializing antibody-based therapeutics. The company's key marketed products include YISAIPU, a recombinant fusion protein addressing autoimmune conditions such as rheumatoid arthritis, ankylosing spondylitis, and psoriasis; Jiannipa, a recombinant humanized anti-CD25 monoclonal antibody injection utilized to prevent acute rejection in kidney transplantation; and Inetetamab, an innovative anti-HER2 monoclonal antibody for oncology, notable for being independently developed in China. Sunshine Guojian also maintains a robust research and development pipeline, exploring novel antibody drug candidates for various therapeutic areas, including additional autoimmune disorders, solid tumors, and ophthalmological diseases. With a strong focus on advanced antibody technologies, the company leverages its integrated platforms for global collaborations, such as the partnership with Numab Therapeutics for multi-specific cancer antibodies and the joint development of the PD-1/VEGF bispecific antibody SSGJ-707, which has entered global Phase III clinical trials with Pfizer. Established in 2002, the company operates from its headquarters in Shanghai, China.