Oral rehydration salt (Lening) is a product produced by Shanghai Hengshan Pharmaceutical Co., Ltd. According to the official website of Shanghai Hengshan Pharmaceutical, Shanghai Hengshan Pharmaceutical is a listed pharmaceutical industry.
Shanghai Hengshan Pharmaceutical Co., Ltd., located in Minhang Jiangchuan Economic City, is located in the upper reaches of Huangpu River, adjacent to the ecological park. Formerly known as Shanghai 21st Pharmaceutical Factory, founded in 1942, it is one of the earliest pharmaceutical enterprises that produce capsule preparations in China.