Permitted items: manufacture of road motor vehicles. General items: manufacture of automotive parts and accessories; manufacture of specialized environmental protection equipment; manufacture of domestic waste treatment equipment; manufacture of sludge treatment equipment; manufacture of specialized equipment (excluding specialized equipment requiring administrative approval); automobile sales; sales of new energy vehicles; sales of new energy vehicle electrical accessories; sales of specialized environmental protection equipment; sales of mechanical equipment; wholesale of automotive parts; technical services, technical development, technical consulting, technical exchange, technical transfer, and technical promotion; import and export of goods.