Road motor vehicle manufacturing; Special equipment manufacturing; Special equipment installation, modification and repair. General items: Automobile sales; Motor vehicle repair and maintenance; Mechanical equipment research and development; Mechanical parts and components processing; Mechanical equipment sales; Environmental protection special equipment manufacturing; Environmental protection special equipment sales; Special equipment sales; Electronic and mechanical equipment maintenance (excluding special equipment); Leasing services (excluding licensed leasing services); Textile sales; Apparel wholesale; Daily-use miscellaneous goods sales; Communication equipment sales; Plastic products sales; Instrument and meter sales; Hardware products wholesale; Metal products sales; Import and export of goods.