Production and sales: semi-trailers, car containers, automobile and motorcycle parts (excluding engine manufacturing and processing), general machinery and parts; municipal equipment and facilities, sanitation equipment and facilities, industrial robots and parts, automation equipment and parts; automobile maintenance, installation and repair of automobile parts (both of the above must obtain relevant administrative licenses before they can operate); mechanical processing; riveting and welding processing; general Freight transportation (operating only after obtaining relevant administrative licenses); sales: automobiles, machinery and equipment, metal materials (excluding rare and precious metals), electronic products, Wujijiaodian, chemical products and raw materials (excluding chemical dangerous goods and precursor chemicals), building materials (excluding chemical dangerous goods), decorative materials (excluding chemical dangerous goods)**[Projects that require approval according to law can only be carried out with the approval of relevant departments]