Adopt PWM+PFM control theory, the control circuit is reliableWith perfect protection function, it`s durableConvenient for carry, applicable for working place with many movementCutting cost is low, just 1/3 of oxyacetylene cuttingCutting current can be ajusted, applicable for steel of each thicknessThe cutting seam is smooth, don`t need fabrication afterwardsWith high shifting efficiency, can save energyApplicable for cutting of each metal