Auto parts and accessories manufacturing, information system integration services, intelligent control system integration, software development, information technology consulting services, mold manufacturing, mold sales, non-ferrous metal casting, technology import and export, automobile decorative products manufacturing, motorcycle parts manufacturing, high-speed rail equipment and accessories manufacturing, special equipment manufacturing (excluding licensed professional equipment manufacturing), hydraulics Manufacturing of power machinery and components, manufacturing of hydraulic power machinery and components, manufacturing of general parts and components, processing of mechanical parts and components, metal cutting and processing services, sales of mechanical equipment, sales of new energy vehicle electrical accessories, sales of assistive bicycles, scooters and spare parts, sales of intelligent basic manufacturing equipment, sales of rail transit engineering machinery and components, and rail transit special equipment Sales of equipment, key systems and components, sales of new energy vehicle production and testing equipment, sales of furniture spare parts, sales of household appliances spare parts, sales of communication equipment, sales of used goods, sales of mechanical parts and spare parts, sales of automotive decorative supplies, sales of machine tool functional components and accessories, sales of industrial automatic control system devices, sales of industrial control computers and systems, high-speed rail Sales of equipment and accessories, sales of pneumatic and electric tools, sales of off-highway recreational vehicles and spare parts, sales of forgings and powder metallurgy products, general equipment manufacturing (excluding special equipment manufacturing), mechanical and electrical equipment manufacturing, general equipment repair, special equipment repair, mechanical and electrical equipment sales, casting machinery manufacturing, casting machinery sales, hydraulic power machinery and component sales