1. 180 ° Sine wave DC inverter technology. 2. With Digital Active PFC, voltage stability, and improve press drive capability. 3. High-frequency drivers to 120Hz above, rapid cooling, more efficient. 4. Excellent low frequency performance below 10Hz running smoothly and without stopping. 5. More than 40%~70% energy save. 6. Singe Chips control system and Intelligent Protection System, safety and stability.