Manufacturing of distribution switch control equipment; manufacturing of intelligent instruments and meters; manufacturing of fireproof sealing materials; manufacturing of capacitors and supporting equipment; manufacturing of mechanical and electrical equipment; manufacturing of power facilities and equipment; manufacturing of electrical accessories; manufacturing of metal structures; manufacturing of transformers, rectifiers and inductors; research and development of metal products; manufacturing of electronic components; sales of mechanical equipment; sales of special equipment; sales of power electronic components; retail of electronic components; sales of metal structures; wholesale of computer software, hardware and auxiliary equipment; sales of electrical accessories; sales of fireproof blocking materials; capacitors Sales of its supporting equipment; sales of building materials; sales of mechanical and electrical equipment; sales of intelligent instruments and meters; sales of communication equipment; production of chemical products (excluding licensed chemical products); sales of knitted textiles and raw materials; wholesale of auto parts; production of bearing steel products; retail of hardware products; sales of building decoration materials; wholesale of daily necessities; sales of building blocks; retail of daily household appliances; sales of daily sundries; sales of special textile equipment; foreign contracted projects; technical services, technology development, technical consultation, technical exchanges, technology transfer, and technology promotion. (You are not allowed to engage in business activities that are prohibited or restricted by national and municipal industrial policies.)