General items: Manufacturing of auto parts and accessories; manufacturing of household waste treatment equipment; manufacturing of specialized equipment (excluding licensed specialized equipment manufacturing); sales of automobiles; sales of fire-fighting equipment; manufacturing of construction machinery; manufacturing of metal packaging containers and materials; manufacturing of environmental protection specialized equipment; R&D of auto parts; manufacturing of plastic products; electrophoretic coating processing; sales of metal products; sales of metal materials; sales of construction machinery; sales of household waste treatment equipment; retail of auto parts; sales of plastic products; sales of special equipment; leasing services (excluding licensed leasing services); leasing of mechanical equipment; domestic freight forwarding; technical services, development, consulting, exchange, transfer, and promotion; import and export of goods; import and export of technology. Licensed items: Manufacturing of road motor vehicles.