Special-purpose automobile equipment manufacturing and mold processing; Sales of special-purpose vehicles, trucks, special vehicles, automobile chassis, sanitation vehicles, auto parts, engineering machinery, sanitation equipment, garden equipment, garbage bins, trash cans, LED electronic screens, LED light boxes, electromechanical products, building materials, steel, hardware, chemical products (excluding hazardous chemicals and precursor chemicals), rubber products (excluding disposable foamed plastic products and ultra-thin plastic bags); Road sweeping and cleaning services; Development and sales of vehicle-mounted generators, computer software and hardware and auxiliary equipment; Electronic technology and product development (excluding wireless transmission devices and ground satellite receiving equipment); Automobile design services; Import and export business (excluding businesses restricted or prohibited by the state). (Projects subject to licensing shall be operated only after obtaining relevant department permits.)