Manufacturing of mechanical and electrical equipment; manufacturing of power facilities and equipment; R&D of emerging energy technologies; Internet of Things technical services; operation of electric vehicle charging infrastructure; sales of new energy vehicle electrical accessories; energy storage technology services; technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; computer software, hardware and peripheral equipment manufacturing; intelligent vehicle equipment manufacturing; integrated circuit manufacturing; information system integration services; charging pile sales; professional design services; construction materials sales Software development; Manufacturing of electrical instruments and meters; Manufacturing of general parts and components; Wholesale of motorcycles and spare parts; Electrical equipment repair; Sales of fire-fighting equipment; General mechanical equipment installation services; Sales of intelligent power transmission, distribution and control equipment; Manufacturing of power transmission, distribution and control equipment; Sales of plastic products; Advertising design and agency; Advertising production; Conference and exhibition service licensing projects: Construction projects; Installation, maintenance and testing of power transmission, power supply and power receiving power facilities; Construction labor subcontracting; Power supply business