Manufacturing, processing (operated by branches above the upper limit), wholesale and retail of shock absorbers and valves (except special equipment), wholesale and retail of pipe fittings, rubber and plastic products, water pumps, stainless steel products, mechanical and electrical equipment, Wujinjiaodian, plumbing equipment, air conditioning equipment, fire-fighting equipment, auto parts, motorcycle parts wholesale and retail. [Projects that require approval according to law can only be carried out with approval from relevant departments]