Manufacturing of amusement equipment for ordinary open-air playgrounds (excluding large-scale amusement facilities); sales of amusement equipment for ordinary open-air playgrounds; Internet sales (except for the sale of goods requiring licenses); sales of construction materials; sales of metal materials; retail of sporting goods and equipment; retail of hardware products; sales of special equipment for environmental protection; sales of machinery and equipment; second-hand car brokerage; second-hand car trading market operation; sales of new energy vehicles; import and export of goods; import and export of technology; import and export agency; sales of automobiles; retail of motorcycles and spare parts; wholesale of automobile spare parts