Hainan Changjiang Sunshine Pharmaceutical

Hainan Changjiang Sunshine Pharmaceutical is a Chinese pharmaceutical company and a key subsidiary of Yi Chang HEC Sunshine Pharmaceutical (HEC Pharm). Located in the Changjiang Li Autonomous County of Hainan, the company serves as a major manufacturing and production base for the group's core products. Its portfolio is heavily focused on anti-viral medications, most notably the production of Oseltamivir (Kewei), alongside treatments for endocrine and cardiovascular diseases. The facility is equipped for large-scale production of active pharmaceutical ingredients (APIs) and finished dosage forms, supporting HEC Pharm's dominant position in the Chinese influenza market.