111, Inc., together with its subsidiaries, operates an integrated online and offline platform in the healthcare market in the People's Republic of China. It operates through two segments, B2C and B2B. The company offers supply chain integration services that help pharmaceutical companies manage products through online and offline channels; product promotion, customer analytics, patient education, and brand awareness services; and marketing and channel data services. It also provides 1 Pharmacy online wholesale pharmacy that offers pharmaceutical and other health and wellness products; and 1 Medicine Marketplace online retail pharmacy that provides pharmaceutical products and other merchandise.