Output power varies with the load, and no energy is wasted. in the holding pressure phase, the servo motor wil reduce speed, with lowenergy consumption; during the cool-down period, the motor does not work, with zero power consumption. Compared with theordinary injection molding machines, it can save 20%-80% of the power. Equipped with the precise pressure sensor and rotary encoder , t can respectively monitor and feed back on flow and presure. Basedon the leedback, the high performance synchronous servo motor wil adiust flow and pressure accordingly by changing the speed andtorque. The closed-oop control can ensure the stability of product quality. The driving system responses with high sensitivity . lt takes only 0.05 seconds to reach maximum value. The response speed is muchfaster than the ordinary injection molding machines. n that way, it significantly shortens the cycle time and increases the productionefficiency.