Hydraulic transmission has many outstanding advantages, so it is widely used, such as general industrial use plastic processing machinery,  hydraulic machinery, machine tools, etc.; walking machinery engineering machinery, construction machinery, agricultural machinery, automobiles, etc.; steel for industrial use metallurgical machinery, lifting equipment, roller adjustment device, etc.; Civil and Hydraulic dams used for flood gates and devices, lifting devices river, bridge control mechanism, etc.; speeder turbine power plants, nuclear power plants, etc.; ship deck crane (winch), the bow doors, bulkheads, valves, stern thruster, etc.; special techniques with the giant antenna control unit, measuring buoys, lifting revolving stage, etc.; military artillery industrial control devices, ship roll devices, aircraft simulation, retractable landing gear and rudder control devices and other devices.