Heparin is mainly found in pig intestinal mucosa, liver, lung and other tissue cells, and is a mucoglycan produced by mast cells in animal connective tissue. Due to its good anticoagulant effect, heparin has become one of the common drugs for clinical anticoagulation, and its main clinical application includes the prevention and treatment of venous embolism (VTE, Including deep vein embolism and pulmonary embolism), acute coronary syndrome (ACS), atrial fibrillation (AF), cardiovascular surgery, hemodialysis.

　　At present, Europe, the United States and other developed countries are the main sales markets of heparin products. Compared with overseas heparin API suppliers, China has congenital advantages and competitive advantages in sufficient supply of heparin API. Qingdao Jiulong Biomedicine Co., Ltd. is mainly engaged in the scientific research, production and sales of heparin sodium and chondroitin sulfate bulk drugs. In recent years, it has also developed enoxaparin sodium, daheparin sodium, heparin sulfate, delpolysaccharose and other bulk drugs, which are widely used in the medical field.