Mechanical equipment and accessories, metal products, hardware products, stainless steel products, bearing processing (limited to branch operations), wholesale, retail, auto parts, motorcycle parts, automotive supplies, lighting equipment, packaging materials, paper products, rubber products, plastic products, building materials, decorative materials, planning Wholesale and retail of computers, software and auxiliary equipment, chemical raw materials and products (except hazardous chemicals, monitoring chemicals, civilian explosives, precursor chemicals), toys, general labor protection supplies, import and export of goods or technology (except for the import and export of goods and technology prohibited by the state or involving administrative approval). [Projects that require approval according to law can only be carried out with approval from relevant departments]