General project: distribution switch control equipment manufacturing; Power transmission and distribution and control equipment manufacturing; Manufacturing of power electronic components; Electronic components manufacturing; Electrical accessory manufacturing; Electric power facilities equipment manufacturing; Mechanical and electrical equipment manufacturing; Electrical equipment manufacturing; Iot device manufacturing; Sales of power electronic components; Sales of electrical accessories; Mechanical and electrical equipment sales; Electrical equipment sales; Electrical instrument sales; Industrial automatic control system device sales; Sales of electronic measuring instruments; Instrument sales; Intelligent instrument sales; Sales of instruments for supply; Retail of computer hardware, software and auxiliary equipment; Sales of chemical products (excluding licensed chemical products); Building materials sales; Domestic trade agency; Sales agent; Sales of labor protection products; Sales of mechanical parts and spare parts; Daily necessities sales; Office supplies sales; Non-residential real estate leasing; Engineering and technology research and experimental development; Technical service, technology development, technology consultation, technology exchange, technology transfer, technology dissemination; Technology import and export; Import and export of goods; General mechanical equipment installation services; Labor service (excluding labor dispatch). (In addition to the items subject to approval according to law, independently carry out business activities according to the business license) Permitted items: labor dispatch services. (For projects subject to approval according to law, business activities can only be carried out after approval by relevant departments, and specific business projects shall be subject to approval documents or license certificates of relevant departments)