Road motor vehicle production; special equipment installation, modification and repair; mobile pressure vessel/gas cylinder filling; special equipment manufacturing; special equipment design; ship manufacturing; hazardous chemical packaging and container production; ship repair; metal ship manufacturing; non-metal ship manufacturing; ship dismantling; ship modification; ship design. General items: automotive parts and accessories wholesale; motor vehicle repair and maintenance; labor services (excluding labor dispatch); aviation business services; special equipment repair; general equipment repair; general-purpose equipment manufacturing (excluding special equipment manufacturing); professional cleaning, washing and disinfection services; gas and liquid separation and purification equipment manufacturing; gas and liquid separation and purification equipment sales; metal surface treatment and heat treatment processing; metal cutting processing services; metal structure manufacturing; security equipment manufacturing; water transportation equipment sales; technical services, technology development, technical consultation, technical exchange, technology transfer, technology promotion; car sales; automotive parts research and development; automotive parts remanufacturing; automotive parts and accessories manufacturing; mechanical parts and components processing; mechanical parts and components sales; general parts manufacturing; special equipment sales; general mechanical equipment installation services; ship sales; ship leasing; marine supporting equipment manufacturing; water transportation equipment parts manufacturing; ship towing services; recreational ship and sports ship manufacturing; recreational ship and sports ship sales; emergency rescue services; parking lot services.