Dismantling of scrapped motor vehicles; general items of recycling of scrapped motor vehicles: remanufacturing of auto parts; manufacturing of generators and generator sets; sales of generators and generator sets; sales of lubricants; manufacturing of electric motors; sales of plug-in hybrid special engines; sales of mechanical and electrical equipment; repair of electrical equipment; recycling and cascade utilization of new energy vehicle waste power batteries (excluding hazardous waste operations); manufacturing of motorcycle parts; and recycling of resources. Technology research and development; sales of rail transit special equipment, key systems and components; import and export of goods; special equipment manufacturing (excluding licensed professional equipment manufacturing); motor manufacturing; mechanical and electrical equipment manufacturing; auto parts wholesale; auto parts retail; auto parts and accessories manufacturing; auto parts R&D; renewable resource processing; electrical accessories sales; hardware product retail; hardware product wholesale; mechanical parts and parts sales; wind Sales of machines and fans; manufacturing of general equipment (excluding manufacturing of special equipment); repair of general equipment; repair of metal products; repair of special equipment; sales of professional machinery for agriculture, forestry, animal husbandry, auxiliary and fishery; manufacturing of special machinery for the production of building materials; manufacturing of special machinery for tunnel construction; sales of machinery and equipment; sales of agricultural machinery; manufacturing of agricultural machinery; installation and maintenance of professional machinery for agriculture, forestry, animal husbandry and fishery; manufacturing of professional machinery for agriculture, forestry, animal husbandry and fishery; General mechanical equipment installation services; battery spare parts sales; security equipment manufacturing; safety and fire-fighting metal product manufacturing; road cargo transportation station operations; construction engineering machinery sales; mining machinery manufacturing; mining machinery sales; battery spare parts production; new energy vehicle electrical accessories sales; electrical machinery special equipment manufacturing; gas compression machinery manufacturing; gas compression machinery sales; new energy prime mover equipment manufacturing; new energy prime mover equipment sales