Installation, modification, and repair of special equipment; production of road motor vehicles; inspection and testing of special equipment; construction engineering construction; construction engineering design. General items: motor vehicle repair and maintenance; repair of specialized equipment; sales of special equipment; wholesale of auto parts; retail of auto parts; technical services, technical development, technical consulting, technical exchange, technology transfer, and technology promotion; sales of charging piles; sales of new energy vehicle battery swap facilities; operation of electric vehicle charging infrastructure; sales of new energy vehicle electrical accessories; centralized fast charging stations; sales of motor vehicle charging; manufacturing of power transmission and distribution and control equipment; research and development of emerging energy technologies; energy storage technical services.