YiChang HEC ChangJiang Pharmaceutical Co., Ltd. engages in the development, manufacturing and sale of pharmaceutical products focused on anti-virus, endocrine and metabolic, and cardiovascular therapeutic areas in the People's Republic of China. The company manufactures and sells active pharmaceutical ingredients and finished drugs including flagship antiviral products such as Kewei (oseltamivir phosphate granules and capsules), Ertongshu, Xinhaining and Xining; cardiovascular and metabolic offerings such as Oumeining (telmisartan), Benzbromarone, Amlodipine Besylate and Cetirizine Hydrochloride; innovative pipeline drugs including Emitasvir Phosphate capsules for hepatitis C, Encofosbuvir Tablets approved in March 2025 as a pan-genotypic chronic hepatitis C treatment, Netanasvir Phosphate Capsules approved in February 2025, insulin series products and the SGLT-2 inhibitor Olorigliflozin submitted for type 2 diabetes treatment; as well as medical devices, biotechnology research and marketing consulting services. It distributes products to hospitals and medical institutions via an extensive network of distributors and engages in centralized bulk procurement with 12 chemical generic drugs; founded in 2001 and headquartered at No. 38 Binjiang Road in Yichang, China, it operates as a subsidiary of Guangdong HEC Technology Holding Co., Ltd. with approximately 4,861 employees. In 2025, Sunshine Lake Pharma Co., Ltd. completed the acquisition of the remaining 48.6% stake for HKD 8.3 billion through a merger by absorption finalized on August 7, following shareholder approvals in July 2025, NDRC approval and Stock Exchange delisting clearance, resulting in the company's privatization and delisting from the Hong Kong Stock Exchange.