Technical services, technical development, technical consultation, technical exchange, technology transfer and technology promotion; Wholesale of computer software, hardware and auxiliary equipment; Digital technology services; Cloud computing equipment technical services; 5G communication technology services; Sales of metal materials; Big data services; Internet data services; Basic artificial intelligence software development; Sales of artificial intelligence hardware; Retail of hardware products; Information consulting services (excluding licensed information consulting services); Internet sales (excluding goods that require licensing for sales); Sales of daily necessities; Sales of labor protection supplies; Sales of agricultural and sideline products; Wholesale of aquatic products; Sales of chemical products (excluding licensed chemical products); Sales of arts and crafts as well as etiquette supplies (excluding ivory and its products); Sales of lubricating oil; Import and export of goods.