General items: Import and export of goods; Sales of mechanical parts and spare parts; Sales of electrical accessories; Electrical equipment sales; System

Cold and air conditioning equipment sales; Fan, fan sales; Hardware products wholesale; Sales of household appliances; Gas and liquid separation

And pure equipment sales; Mechanical and electrical equipment sales; Sales of electronic special materials; Special equipment sales; Electronic component

Wholesale; High-speed rail equipment, accessories sales; Gas compression machinery sales; Sales of power facilities and equipment; Sales of daily necessities;

Sales of metal parts for construction; Water transport equipment sales; Metal tool sales; Instrument sales; Metalwork pin

Sell; Sales of electronic components and electromechanical components; Sales of special instruments for navigation, mapping, meteorology and ocean; Integrated electricity

Road chip and product sales; Weighing instrument sales; Intelligent instrument sales; Seal sales; Liquid airtight elements and system pins

Sell;