Import and export of goods. General items: sales of machinery and equipment; research and development of machinery and equipment; research and development of automobile parts; manufacturing of automobile parts and accessories; retail of automobile parts and accessories; wholesale of automobile parts and accessories; wholesale of motorcycles and spare parts; sales of lubricants; sales of building materials; sales of building decoration materials; sales of household appliances; sales of daily necessities; wholesale of hardware products; sales of sanitary ceramic products; wholesale of kitchenware, sanitary ware and daily sundries; sales of labor protection supplies; sales of electrical machinery and equipment.