Alibaba Health Information Technology Limited, an investment holding company, engages in the pharmaceutical direct sales, pharmaceutical e-commerce platform, and healthcare and digital services businesses in Mainland China and Hong Kong. It offers range of prescription drugs, over-the-counter drugs, nutritional supplements, medical devices, contact lenses, and various other health-related products through its online stores on Tmall.com and offline pharmacy outlets to business-to-customer and business-to-business customers; and pharmaceutical products, medical devices and healthcare products, health food, sexual health and family planning products, contact lenses, and medical and healthcare services through its e-commerce platform. The company also provides medical and healthcare services, including medical checkups, nucleic acid testing, medical consultation, registration, vaccination, and TCM through various channels, such as Taobao, Tmall, Alipay, Dr. Deer APP, Gaode, DingTalk, and Quark. In addition, it engages in the tracking business; provision of network hospital, healthcare related internet information, internet information, and healthcare related technical services; operation of internet hospitals; and asset management services. The company was formerly known as CITIC 21CN Company Limited and changed its name to Alibaba Health Information Technology Limited in September 2014. Alibaba Health Information Technology Limited is based in Causeway Bay, Hong Kong.