... .High cutting speed 2.PWM modulation technique 3.High inverter frequency Mosfet series CUT40 Inverter Air Plasma Cutter 1)Function and feature:*High ... of torch cutting,low operation cost *PWM modulation technique,high inverter frequency,protable,energy saving.*Narrow cutting gas, smooth cutting surface ... .Gas gauge3.Earth clamp 4.Air horse4) Product show: Mosfet series CUT40 Inverter Air Plasma Cutter