General project: Sales of chemical products (excluding licensed chemical products); Sales of mechanical equipment; Sales of mechanical parts and components; Retail of hardware products; Wholesale of hardware products; Sales of hydraulic power machinery and components; Sales of daily miscellaneous goods; Sales of non-metallic minerals and products; Sales of metal ores; Sales of metal materials; Bearing sales; Sales of metal products; Sales of metal wire ropes and their products; Operation of wires and cables; Sales of metal structures; Battery sales; Sales of battery spare parts; Sales of household items; Wholesale of kitchenware, sanitary ware, and daily necessities; Sales of daily necessities; Sales of office supplies