General projects: Technical services, technical development, technical consultation, technical exchange, technology transfer and technology promotion; Sales of electrical equipment; Sales of building decoration materials; Lighting sales; Sales of household appliances; Sales of smart home consumer devices; Sales of intelligent instruments; Wholesale of electronic components; Distribution switch control equipment sales; Wholesale of hardware products; Hardware product research and development; Sales of metal materials (except for projects subject to approval according to law, independently carry out business activities according to law with business license). Permitted items: Import and export of goods (for items subject to approval according to law, business activities can only be carried out after approval by relevant departments, and the specific business items shall be subject to the examination and approval results).