Main Products : General projects: engineering and technology research and experimental development; New material technology research and development; Motor and its control system development; Metal structure manufacturing; Metal structure sales; Plastic products manufacturing; Sales of plastic products; Door and window manufacturing and processing; Distribution switch control equipment manufacturing; Distribution switch control equipment sales; Electrical equipment manufacturing; Mechanical and electrical equipment manufacturing; Electrical equipment sales; Hardware products wholesale; Intelligent transmission and distribution and control equipment sales; Power transmission and distribution and control equipment manufacturing; Electrical accessory manufacturing; Electric power facilities equipment manufacturing; Mechanical and electrical equipment sales; Photovoltaic equipment and components manufacturing; Sales of photovoltaic equipment and components; Lighting appliance manufacturing; Lighting appliance sales; Optical communication equipment manufacturing; Sales of power electronic components; Electronic special equipment manufacturing; Wire and cable management; Sales of building decoration materials; Seal sales; Seal manufacturing; General purpose parts manufacturing; General equipment manufacturing (excluding special equipment manufacturing); Manufacture of rubber products; Rubber products sales; Sales of labor protection products; Manufacturing of industrial automatic control systems; Fire equipment sales; Sales of electronic components and electromechanical components; Security equipment sales; Sales of household appliances; Sales of chemical products (excluding licensed chemical products); Glass fiber and product manufacturing; Glass fiber reinforced plastic products sales; Glass fiber and products sales; Glass fiber reinforced plastic products manufacturing; General merchandise sales; Leather sales; Sales of fireproof sealing materials; Manufacture of electrical signal equipment; Solar thermal power equipment sales; Solar thermal power generation products sales; Photovoltaic power generation equipment leasing; Technical service, technology development, technology consultation, technology exchange, technology transfer, technology dissemination; Solar power technology services; Import and export of goods; Technology import and export; Metal material sales; Sales of special equipment for environmental protection; Non-ferrous metal alloy sales; Metal products for safety and fire protection; Fire technical services; Sales of metal products (except for items subject to approval according to law, independently carry out business activities according to law with business licenses)