Jiangsu Sihuan Bioengineering Co., Ltd. produces and sells biopharmaceutical products in China and internationally. Its products include Delusen and New Delusen, a human interleukin-2 for injection used as an immunomodulator for tumor biotherapy and for patients with weakened immune function; Xinlisheng, a human granulocyte colony-stimulating factor injection for neutropenia caused by bone marrow transplantation, cancer chemotherapy, myelodysplastic syndrome, and aplastic anemia; and Huanerbo, a human erythropoietin injection for anemia caused by renal insufficiency. The company also engages in flower planting, forest and natural ecosystem management and protection, forest improvement, forestry product sales, Chinese herbal medicine planting, landscaping project construction, urban municipal greening management, scenic area management, municipal facilities management, earthwork construction, engineering management services, forest park management and design management, external contracting, project cost consulting services, and the sale of metal materials, agricultural and sideline products, and building and decoration materials. Founded in 1992, it is headquartered in Jiangyin, China.