1. Overall welded and processed structure 2. Closed loop control mode composed of electric-hydraulic servo valve and measure ruler, ensure the highest controlling precision, bending accuracy and re-positioning accuracy also reach the highest level. 3. Back-gauge mechanism can control several background axes. 4. Integrated hydraulic system decreases the pipe connections, oil leakage, and increases the stability and overall beautifies. 5. Hydraulic compensation mechanism helps to prevent the deformed slider from affecting the quality of the workpiece,and the compensation mechanism is adjusted automatically by the CNC controller which is convenient and accuracy. 6. NC controller uses Holland DELEM, Italy ESA or Swiss CYBELEC with Mulch-languages.