Sales of specialized vehicles, commercial vehicles, vehicle chassis, sanitation equipment, sanitation vehicles, new energy vehicles, new energy sanitation vehicles, electromechanical products, temperature monitoring equipment and accessories, medical vehicles, fire trucks, fire-fighting equipment, equipment and accessories, municipal public facilities, agricultural machinery, forklifts and accessories, garbage bins, plastic products (excluding disposable foamed plastic products and ultra-thin plastic bags), labor protection products, steel, and tires; manufacturing, processing (excluding special equipment), and sales of compartments, tanks (excluding pressure vessels and dangerous goods containers), refrigeration units, auto parts, auto accessories, upper assembly parts, mechanical equipment, sanitation equipment, traffic facilities, signage, garden machinery, plant protection machinery, dust removal machinery, snow removal machinery and accessories; delivery of commercial vehicles; research and development of new vehicle products and technology transfer services; inspection and testing technical services for refrigerated vehicles; import and export business of automobiles and parts. (The above business items do not include processing and manufacturing of special equipment and items restricted, prohibited, or requiring permission by the state; involving licensed operation projects, they shall be operated after obtaining permission from relevant departments and in accordance with the licensed items.)