Suzhou Zelgen Biopharmaceuticals Co., Ltd. is a China-based company that researches, develops, manufactures, sells, and distributes medicines. Its products include donafenib tosylate tablets for liver cancer, hepatocellular carcinoma, and metastatic radioactive iodine-refractory differentiated thyroid cancer, and recombinant human thrombin for hemostasis. The company is also developing gecacitinib hydrochloride tablets for severe alopecia areata, moderate to severe atopic dermatitis, ankylosing spondylitis, moderate to severe plaque psoriasis, idiopathic pulmonary fibrosis, and myelofibrosis; recombinant human thyroid-stimulating hormone for injection; and ZG006 for injection for small cell lung cancer, neuroendocrine carcinoma, and other advanced tumors. In addition, it is developing ZG005 for injection, which is in phase I/II clinical trials for cervical cancer, liver cancer, neuroendocrine carcinoma, and other advanced tumors, as well as ZGGS18, ZGGS15, ZGGS34, ZG016, ZG2273, ZG2001film, and ZG0895 hydrochloric acid for injection for advanced tumors. Its products are used in multiple therapeutic areas, such as tumors and hematological diseases, bleeding and trauma, and immune inflammatory diseases. Founded in 2009, the company is based in Kunshan, China.