General item furniture sales; Furniture spare parts sales; Daily necessities sales; Building materials sales; Building boron block sales; Building ceramic products sales; Hardware products wholesale; Hardware products retail; Doors and windows sales; Building metal fittings sales; Technical glass products sales; Optical cable sales; Internet sales (except for the sale of goods that require a license); Household products sales; Bamboo products sales; New ceramic materials sales; Special ceramic products sales; Sanitary ceramic products sales; Metal matrix composite materials and ceramic matrix composite materials Sales; Sales of decorative materials; Sales of moulds; Sales of metal chains and other metal products; Sales of metal products; Sales of rattan products; Sales of enamel products; Domestic trade agency; Purchasing agency services; Import and export of goods; Technology import and export;