Business Scope：General items: Wholesale of hardware products; retail of hardware products; sales of machinery and equipment; sales of mechanical and electrical equipment; sales of electrical equipment; sales of distribution switch control equipment; wholesale of auto parts; retail of auto parts; sales of power electronic components; electronic components Wholesale; retail of electronic components; sales of instruments and meters; sales of metal materials; sales of rubber products; wholesale of computer software, hardware and auxiliary equipment; retail of computer software, hardware and auxiliary equipment; sales of communication equipment; sales of metal tools; repair of instruments and meters; repair of general equipment ; Mechanical equipment rental; chemical product sales (excluding licensed chemical products); sales of bearings, gears and transmission parts; construction material sales; construction metal accessories sales; labor protection supplies sales; information consulting services (excluding licensed information consulting) services); wholesale of refined oil (excluding hazardous chemicals); sales of fire-fighting equipment. (Except for projects that require approval according to law, business activities can be carried out independently with a business license and in accordance with the law)