Manufacture of special equipment, manufacture of road motor vehicles, construction of fire protection facilities engineering. General items: Manufacture of general equipment (excluding special equipment), manufacture of specialized equipment (excluding specialized equipment requiring permits), manufacture of environmental protection specialized equipment, manufacture of industrial robots, processing of doors and windows, manufacture of metal products for safety and fire protection, manufacture of security equipment, manufacture of material handling equipment, manufacture of containers, manufacture of car washing equipment, manufacture of household appliances, manufacture of molds, processing of mechanical parts and components, manufacture of auto parts and accessories, spray coating processing, sales of mechanical equipment, sales of fire fighting equipment, research and development of mechanical equipment, research and development of metal products, land use rights leasing, residential property leasing, non-residential property leasing, motor vehicle modification services, labor services (excluding labor dispatch).