General items: Distribution switch control equipment sales; Mechanical and electrical equipment sales; Communications equipment sales; Electronic components retail; Electronic products sales; Instrument sales; Hardware retail; Valves and cocks sales; Wire and cable business; Auto parts retail; Tire sales; Security equipment sales; Environmental protection equipment sales; Gas, liquid separation and purification equipment sales; Refrigeration, air conditioning equipment sales; Home appliances sales; Solar thermal equipment sales; Solar thermal power generation products sales; Solar thermal power generation equipment sales; Solar thermal utilization products sales; Solar power technology services; Metal materials sales; Sales of plastic products; General merchandise sales; Office supplies sales; Industrial automatic control system device sales; Pneumatic power machinery and components sales; Power electronic components sales; Photovoltaic equipment and components sales; Sales of semiconductor device equipment, sales of electronic equipment, sales of pumps and vacuum equipment, sales of battery parts, internet sales (except sales of licensed goods), engineering management services, import and export of goods, sales of electrical equipment, sales of electrical equipment and vacuum equipment, sales of electrical equipment, sales of electrical equipment, sales of electrical equipment, sales of electrical equipment, sales of electrical equipment, sales of electrical equipment, sales of electrical equipment, sales of electrical equipment, sales of electrical equipment, sales of electrical equipment, sales of electrical equipment, sales of electrical equipment, sales of electrical equipment, sales of electrical equipment Technology import and export (except for projects subject to approval according to law, independently carry out business activities with business licenses according to Law).