There are six factors: servo motor, encode, internal gear pumpservo driverpressure sensor, closed-loop control card, and they are the core difference from common machine: Character:1.save-energy system pressure, flux double closed-loop, hydraulic system in accordance with actual need of the flux and pressure to provide oil, so overcome high-energy because of the general metering pump system high pressure overflow. Motor work in accordance with the set speed in the stage of pre-plastic, mold-closed, ejection. Reduce motor speed in the stage of pressure retain and cooling. Oil pump motor reduce actual energy consumption 50-80% 2. precise and stable pressure pressure closed-loop control make system pressure very stable and the pressure fluctuations under ±0.5kg, improve the quality of plastic products. 3. repeat high precision use close-loop speed control, injection position high repeat precision 4.high respond speed high respond speed, the pressure rising tine and flux rising time soon to 30ms. Increase the hydraulic system respond speed, reduce action time conversion and speed up the whole operation. Suit the following products 1. deep cavity and thin-walled products 2. PMMA thansparent products, no surface rhyolite 3. thick walled, long pressure restaining time, no surface depression, high saving energy ability 4. high repeat precision structure