General projects: Engineering and technical research and test development; Software development; Research and development of Internet of things technology; Network and information security software development; Network technology service; Computer system services; Science and technology promotion and application services; Technology promotion services; Technology service, technology development, technology consultation, technology exchange, technology transfer and technology promotion; Internet security services; Internet data service; Information system integration service; General application system of artificial intelligence; Intelligent control system integration; Software outsourcing services; Research and development of biochemical products technology; Information technology consulting services; Cloud computing equipment technology service; Blockchain technology related software and services; Data processing and storage support services; Integrated circuit design; Sales of optical communication equipment; Wholesale of kitchenware, sanitary ware and daily necessities; Sales of chemical products (excluding licensed chemical products); Network equipment sales; Sales of office supplies; Wholesale of computer software, hardware and auxiliary equipment; Furniture sales; Software sales; Wholesale of textiles, clothing and household goods; Internet sales (except for the sale of goods requiring license); Sales of daily necessities; Sales of special equipment for environmental protection; Basic software development of artificial intelligence; Sales of mobile communication equipment; Sales of electronic products; Internet equipment sales; Sales of communication equipment; Sales of information security equipment; Sales of mobile terminal equipment; Advertising design and agency; Advertising; Brand management; Energy saving management service; Business agency service; Sales of intelligent unmanned aerial vehicles; Sales of industrial automatic control system devices; Vending machine sales; Rental of sporting goods and equipment; Wholesale of sports goods and equipment; Operation of sports venues and facilities (excluding high-risk sports); Category II medical device leasing; Sales of class II medical devices; Sales of class I medical devices; Category I medical device leasing (except for the items subject to approval according to law, the business activities shall be carried out independently according to law with the business license): Category III medical device leasing; Category III medical device business (for items that must be approved according to law, business activities can be carried out only after approval by relevant departments. The specific business items shall be subject to the approval documents or permits of relevant departments)