AC Gear Motor, DC Gear Motor, Worm Gearbox manufacturer / supplier in China, offering 25ton 500kg Electric Worm Gear Screw Jack 037kw Motor Screw Lift for Industrial Lifting Platform, Swl Swld Heavy Duty Lifting Compact Structure Easy Installation Long Service Life for Pipe Jacking and Platform Table Lift, Screw Lift Elevator Swl1t and Swl2.5t Load with Worm Gear and Hand Crank for Light and Heavy Load Lifting Mechanism and so on.