Wai Yuen Tong Medicine Holdings Limited, an investment holding company, engages in production and sale of Chinese and western pharmaceuticals and health food products in Mainland China and Hong Kong. The company manufactures, processes, and sells traditional Chinese medicines under the brand Wai Yuen Tong brand and western pharmaceutical and personal care products under the Madame Pearl's and Pearl's brands. It also invests in commercial and industrial premises for rental. Wai Yuen Tong Medicine Holdings Limited was founded in 1897 and is headquartered in Kowloon Bay, Hong Kong. The company is a subsidiary of Rich Time Strategy Limited.