Manufacturing of road motor vehicles; road cargo transport (excluding dangerous goods). General items: research and development of mechanical equipment; engineering and technological research and experimental development; technical services, technical development, technical consulting, technical exchange, technology transfer, technology promotion; manufacturing of environmental protection specialized equipment; sales of environmental monitoring specialized instruments and meters; manufacturing of electronic measuring instruments; sales of electronic measuring instruments; sales of instruments and meters; sales of construction steel bars; sales of metal materials; sales of automobiles; retail of automotive parts; wholesale of automotive parts; sales of motor vehicle charging; sales of construction engineering machinery; manufacturing of construction engineering machinery; research and development of emerging energy technologies; sales of new energy vehicle battery swap facilities; sales of new energy vehicle electrical accessories; sales of new energy vehicle production testing equipment; sales of mechanical equipment; sales of electrical equipment; sales of mechanical and electrical equipment; sales of new energy vehicles; sales of tires; sales of rubber processing specialized equipment; processing of metal waste and scrap; import and export of goods; import and export of technology; general cargo warehousing services (excluding items requiring permits such as hazardous chemicals); metal surface treatment and heat treatment; machining of mechanical parts and components; sales of mechanical parts and components; manufacturing of containers; sales of building materials; repair of containers; sales of containers; leasing of containers; motor vehicle repair and maintenance; sales of coatings (excluding hazardous chemicals); manufacturing of concrete structural components; sales of concrete structural components.