General items of road cargo transportation (excluding dangerous goods): manufacturing of special equipment for environmental protection; sales of special equipment for environmental protection; sales of mechanical and electrical equipment; sales of building decoration materials; sales of electrical instruments and meters; sales of special electronic equipment; wholesale of kitchenware, sanitary ware and daily sundries; sales of metal products; sales of sanitary ceramic products; daily necessities Department store sales; wholesale of auto parts and accessories; wholesale of motorcycles and spare parts; sales of pneumatic and electric tools; sales of disinfectants (excluding hazardous chemicals); general machinery and equipment installation services; machinery and equipment leasing; professional cleaning, cleaning, and disinfection services; technical services, technology development, technical consultation, technology exchange, technology transfer, and technology promotion