ESTUN E21S NC controller. Backgauge X-axis is driven by AC motor. HIWIN ball screw and linear guide rail, control precision 0.05mm. Germany Bosch Rexroth integrated hydraulic valve. Germany EMB oil tube connector. Germany Siemens main motor and Schneider electrics. Hydraulic and electrical overload protection. Light aligning. Blade materials ( Cr12MoV or 6CrW2Si). South Korea KACON foot switch. Pneumatic rear supporter.