Zhejiang Cheng Yi Pharmaceutical Co., Ltd. engages in the research, development, production, and sales of formulations and active pharmaceutical ingredients in China and internationally. The company offers glucosamine hydrochloride raw materials and preparations, gastrodin raw materials, ribavirin preparations raw materials, and sulfur dioxide raw materials. It also provides injections, food, capsules, tablets, traditional Chinese medicines, preparations, and intermediates; and joint-related drugs, diuretics and antihypertensive drugs, antiviral drugs, antitumor drugs, vitamins, and sedative and brain-boosting drugs, as well as other health products and medical instruments. The company was formerly known as Wenzhou No. 3 Pharmaceutical Factory and changed its name to Zhejiang Cheng Yi Pharmaceutical Co., Ltd. in April 2001. Zhejiang Cheng Yi Pharmaceutical Co., Ltd. was founded in 1966 and is based in Shanghai, China.