Manufacturing of power distribution switchgear equipment; sales of power distribution switchgear equipment; research and development of power distribution switchgear equipment; repair of electrical equipment; sales of electrical equipment; manufacturing of mechanical and electrical equipment; sales of mechanical and electrical equipment; sales of intelligent power transmission and distribution and control equipment; sales of mining machinery; repair of specialized equipment; manufacturing of electrical instrument and meters; sales of electrical instrument and meters; repair of instruments and meters; manufacturing of electronic components; wholesale of electronic components; retail of electronic components; manufacturing of transformers, rectifiers and inductors; technical services, technical development, technical consultation, technical exchange, technology transfer, and technology promotion; retail of hardware products; sales of motor vehicle charging; operation of electric vehicle charging infrastructure; sales of charging piles; leasing of charging control equipment; centralized fast charging stations; leasing of mechanical equipment; road freight transport of ordinary freight vehicles with a total mass of 4.5 tons or less (excluding network freight and dangerous goods); operation of wires and cables; manufacturing of electrical accessories; sales of electrical accessories. Licensed items: power generation business, power transmission business, power supply (distribution) business; electrical installation services.