Magnetic suspension and name (permanent magnet jack) permanent magnet jack is mainly used for lifting operation process, used to move iron plate, block and cylindrical type of magnetic material of workpiece. Permanent magnet jack using the high performance magnetic material, applying scientific principle of magnetic circuit production. Big suction, volume small, the weight light, safe and convenient operation. Abandoned lifting electromagnet supporting multifarious, need to offer power shortcomings, it is a kind of energy saving ideal sling. Permanent magnet jack is suitable for shipbuilding, engineering machinery, automobile and other industries cold plate lifting, handling, widely used in factories, docks, warehouses and transportation in the industry.