Types of e-commerce departments. The establishment of large chain pharmacies in JD.COM and Tmall belongs to the company's e-commerce sector, which is based on stores on the third-party e-commerce platform and carries out the business of "online booking store delivery" and "online booking store delivery" according to regulatory requirements. Chain pharmacies are the most important form of drug retail in China. Chain pharmacies are single pharmacies with consistent business philosophy, standardized service and complete quality management system.