General projects: Sales of agricultural machinery, sales of agricultural, forestry, animal husbandry, sideline, and fishery specialized machinery, sales of generators and generator sets, wholesale of hardware products, retail of hardware products, sales of mechanical equipment, sales of mechanical parts and components, sales of metal products, wholesale of automotive parts, import and export of goods, sales of rubber products, sales of plastic products, sales of agricultural, forestry, animal husbandry, and fishery machinery accessories, sales of plug-in hybrid engines, sales of non-ferrous metal alloys, Sales of bearings, gears, and transmission components, sales of mechanical and electrical equipment, sales of gas and liquid separation and purification equipment, sales of batteries (except for projects that require approval according to law, business activities shall be carried out independently according to law with a business license)