General items: Metal tool manufacturing; Hardware products manufacturing; Building decoration, plumbing pipe parts and other metal products for construction; Manufacturing of sword handicrafts; Steel rolling processing; Sales of metal tools; Sales of drawing, calculation and measuring instruments; Wholesale of hardware products; Retail of hardware products; Sales of metal forming machine tools; Sales of CNC machine tools; Sales of machine tool functional parts and accessories; Sales of mining machinery; Sales of electrical and mechanical equipment; Sales of machinery and equipment; Sales of rubber products; Bearing sales; Sales of bearings, gears and transmission parts; Sales of generators and generator sets; Sales of special labor protection articles; Lubricant sales; Sales of special chemical products (excluding hazardous chemicals); Sales of valves and cocks; Sales of chemical products (excluding licensed chemical products); Mold sales; Sales of special ceramic products; Sales of electrical accessories; Sales of industrial automatic control system devices; Wire and cable business; Sales of lamps; Sales of lighting appliances; Sales of sanitary ware; Sales of hydraulic power machinery and components; Sales of pneumatic power machinery and components; Sales of gears, gear reducers and gearboxes; Sales of optical instruments; Daily sundries sales; Sales of office supplies; Wholesale of electronic components; Sales of plastic products; Wholesale of auto parts; Retail of motorcycles and spare parts; Wholesale of motorcycles and spare parts; Sales of metal materials; Sales of building materials; Lime and gypsum sales; Sales of knitwear and textiles; Sales of knitwear, textiles and raw materials; Sales of labor protection articles; Fire fighting equipment sales; Sales of metal chains and other metal products.