Sales of fasteners; sales of plastic products; retail of hardware products; wholesale of hardware products; sales of metal materials; sales of lamps; sales of lighting fixtures; wholesale of auto parts and accessories; retail of auto parts and accessories; wholesale of motorcycles and spare parts; sales of battery spare parts; retail of motorcycles and spare parts; sales of machinery and equipment; self- Wholesale of bicycles and spare parts; sales of household appliances spare parts; sales of daily necessities; sales of metal structures; sales of wires and cables; sales of sanitary ceramic products; wholesale of kitchenware, sanitary ware and daily sundries; sales of sanitary ware; sales of enamel products; sales of molds; import and export of goods; import and export of technology; import and export agency.