Manufacturing of generators and generator sets; sales of generators and generator sets; manufacturing of gears and gear reducers and gearboxes; motor manufacturing; manufacturing of mechanical and electrical equipment; manufacturing of special equipment (excluding manufacturing of licensed professional equipment); electrical equipment repair; sales of gears and gear reducers and gearboxes; sales of high-speed precision gear transmissions; sales of electrical equipment; sales of power dynamometer motors; wholesale of hardware products; retail of hardware products; sales of rubber products; plastic products Sales; sales of packaging materials and products; sales of valves and cocks; sales of lubricants; sales of bearings; sales of fasteners; sales of pumps and vacuum equipment; sales of electronic products; wholesale of electronic components; retail of electronic components; sales of pneumatic and electric tools; sales of metal materials; sales of building decoration materials; sales of office supplies; sales of labor protection supplies; sales of daily necessities; wholesale of stationery; retail of stationery; sales of wood; sales of instruments and meters ; Business of wires and cables; Sales of drawing, calculation and measuring instruments; Sales of chemical products (excluding licensed chemical products); Wholesale of computer software, hardware and auxiliary equipment; Retail sale of computer software, hardware and auxiliary equipment; Sales of toys; Sales of arts and crafts and ceremonial items (except ivory and its products); Retail sale of motorcycles and spare parts; Wholesale of motorcycles and spare parts; Wholesale of automobile spare parts; Retail sale of automobile spare parts; Sales of household appliances; Cameras and instruments Sales of materials; sales of machinery and equipment; housing leasing; construction of landscaping projects; residential water and electricity installation and maintenance services; repair of general equipment; sales of automobile decorative supplies; sales of fire-fighting equipment; sales of gifts and flowers; sales of furniture; sales of first-class medical equipment; professional design services; advertising production; advertising design and agency; advertising release; graphic design; packaging services; conference and exhibition services; food sales (only sales of pre-packaged food); battery sales. Licensing items: Liquor business.