This series of products with high precision hydraulic transmission, lifting balance, simple operation, low failure rate, high strength chain driven, large carrying capacity, long service life, high safety coeffcient, double chain lifting lifting, safe and stable, adjustable screw, ensure that the platform level, automobile smooth lifting, large capacity pumping station, lifting speed, sound operation low, beautiful appearance, firm structure. Widely used in the car 4s shop, large repair shop, large model car park, etc, for the vehicle to enhance or three-dimensional parking can also be used as cargo.