The registered address of shandong hengjian mechanics ltd. Is located at the sheep-flow industrial park in new thai township in taian city, with the registration authority being the new thai city market supervisory authority. The legal person is wu nai-li, operating on the basis of the construction, sale, installation, repair and adaptation of bridge cranes, door cranes, arms cranes, capping, light lifting equipment; installation and repair of elevators, door lifts, lifters; manufacture and sale of low-voltage switches, distribution tanks; maintenance of environmental equipment; construction and sale of machinery and accessories for mines; electrical cables, equipment and accessories for protection against corruption, fire protection equipment, electrical equipment, air conditioning, hydraulic pillars, pressure containers, sale of five-dollar electric power, plastics, rubber products; continuous handling equipment, powdering equipment, transfer of coal, anti-fouling equipment, maintenance of dust-freezing equipment, maintenance of dust-blowing equipment; heating works, construction of fire protection facilities, construction works; handling and handling of goods; transportation of general goods; and transportation of goods. (projects subject to legal approval may not operate without the approval of the relevant department)