Sunshine Lake Pharma Co., Ltd. researches, develops, manufactures, and sells pharmaceutical products for infectious diseases, chronic diseases, and oncology. Its offerings include Kewei for influenza, and Dongweien and Dongyinghe for hepatitis C. The company also engages in the import, export, wholesale, retail, and distribution of pharmaceutical products, intermediates, and active pharmaceutical ingredients, as well as quality inspection, biosimilar and new biologic R&D, generic drug research and production, pharmaceutical consulting and market promotion, and chemical raw material drugs and preparations. Formerly Sunshine Lake Pharma Ltd., it was established in 2001 and is based in Dongguan, China.