Licensed project: Construction engineering design; Operational services for urban household waste; Construction projects (excluding nuclear power plant construction and operation, civil airport construction); Installation of civil defense engineering protective equipment; Electrical installation services (for projects that require approval by law, business activities can only be carried out after approval by relevant departments. The specific business projects are subject to the approval results) General projects: Engineering and technical services (excluding planning management, survey, design, and supervision); Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Information technology consulting services; Engineering management services; Professional design services; Industrial engineering design services; Enterprise management consulting; Information consulting services (excluding licensed information consulting services); Technology promotion services; Personal business services; Sales of lighting fixtures; Organize cultural and artistic exchange activities; Corporate image planning; Project planning and public relations services; Technology promotion and application services; Sales of special labor protection equipment; Sales of toys, anime, and entertainment products; Sales of entertainment and entertainment products; Sales of office equipment; Sales of arts and crafts and ceremonial items (excluding ivory and its products); Sales of electronic products; Retail of hardware products; Sales of building materials; Sales of rubber products; Outdoor product sales; Retail of sports goods and equipment; Sales of specialized teaching instruments; Sales of daily necessities; Sales of building decoration materials; Import and export of goods; Import and export agency; Technology import and export; Foreign contracted projects; Home services; Sales of electronic specialized equipment; Sales of power electronic components; Sales of refrigeration and air conditioning equipment; General equipment repair; Mechanical equipment leasing; Professional cleaning, cleaning, and disinfection services; Seal sales; Sales of lightweight building materials; Installation services for ordinary mechanical equipment; Sales of cement products; Sales of building waterproofing membrane products; Construction of earthwork engineering; Construction of landscaping projects (except for projects that require approval according to law, business activities can be carried out independently based on the business license in accordance with the law)