Changzhou Qianhong Biopharma Co., Ltd. (002550.SZ) manufactures and markets polysaccharide and protease biopharmaceuticals, focusing on medicinal enzymes and heparin-based products. The company produces active pharmaceutical ingredients and finished dosage forms including pancreatic kininogenase series for microcirculation disorders; asparaginase series for acute lymphoblastic leukemia; compound digestive enzyme capsules (II) and elastase series for digestive support; heparin sodium and calcium; and low molecular weight heparins such as nadroparin calcium, enoxaparin sodium, and dalteparin sodium, offered in tablets, hard capsules, lyophilized powders, injections, pre-filled syringes, and raw materials. It operates primarily in the cardiovascular, circulatory, digestive, and anti-tumor segments, serving domestic hospitals and exporting to Europe, North America, South America, and Southeast Asia. Founded in 1971 and headquartered in Changzhou, Jiangsu Province, China, the company maintains holding subsidiaries including Jiangsu Zhonghong Bioengineering Pharmaceutical Research Institute Co., Ltd., Changzhou Yingnuo Shengkang Biomedical Technology Co., Ltd., Changzhou Qianhong Health Technology Co., Ltd., and Qianhong Biochemical Pharmaceutical (Hubei) Co., Ltd. In recent developments, Changzhou Qianhong signed an agreement in September 2022 for a new API production base in Zhongxiang, Hubei Province to expand manufacturing capacity; plans to raise up to 1 billion yuan as of November 2024 for acquisitions and technological upgrades; and advances a pipeline with candidates like ZHB-111 in Phase 2 for growth hormone deficiency, alongside investments in oncology and autoimmune therapies.