Production, service, and repair of electrical equipment; manufacturing of special equipment for electronic and electrical machinery, general instruments and meters, power transmission and distribution and control equipment, wires, cables, lighting fixtures, new energy vehicle parts, railway locomotive and rolling stock parts, high-speed rail equipment and parts, intelligent comprehensive distribution cabinets, and comprehensive distribution boxes; research and development of electronic technology, electrical technology, and electronic products; software technical services; engineering and technical research and experimental development; wholesale of mechanical equipment, hardware products, and electronic products; electronic technical services; self-operated and agency import and export of various commodities and technologies, except those restricted or prohibited by the state; software development; software technology transfer; electronic technology transfer; production of electrical complete sets and electronic products; sales of electronic products; manufacturing of automotive parts and accessories (excluding engine manufacturing); processing of electromechanical equipment; repair of instruments and meters.