Sales of construction machinery; Rail transit construction machinery and parts sales; Machinery and equipment sales; Food with plastic packaging container tool products sales; Electric food processing equipment sales; Refrigeration, air conditioning equipment sales; Agriculture, forestry, animal husbandry, deputy, fishery professional machinery sales; Installation and maintenance of specialized machinery for agriculture, forestry, animal husbandry and fishery; Livestock machinery sales; Feed production special equipment sales; Agricultural machinery sales; Sales of machinery parts and spare parts; General equipment repair; Daily electric appliance repair; Sales of electronic products; Sales of household appliances; Daily household appliance retail; Instrument sales; Instrumentation repair; Home appliance installation service; Sales of chemical products (excluding licensed chemical products); Auto parts retail; Auto parts wholesale; Motorcycle and spare parts wholesale; Motorcycle and spare parts retail; Hardware products wholesale; Hardware products retail; Sales of plastic products; Rubber products sales; Leather products sales; Needle textiles and raw materials sales; Textile, clothing and household goods wholesale; Building ceramic products sales; Sales of sanitary ceramics; Sales of daily ceramic products; Sales of daily glass products; Sales of metal materials