QL screw jack application field:Products are widely used in petrochemical, mining, railway, building, metallurgy, chemical industry, port, electric power, steel, shipbuilding, automobile manufacturing, plastics machinery, industrial control, highway, bulk transportation, pipe linings, slope protection, tunnel, shaft governance salvage, ocean engineering, airport construction, bridge, aviation, spaceflight, heavy loading and unloading, tank inversion welding, such as a variety of large and medium-sized concrete, steel structure and mechanical equipment installation and moving, applicable to the construction and installation, slope tunnel, shaft governance protection infrastructure projects such as machinery and equipment, venues and other important industries and infrastructure engineering machinery and equipment.