... air. 2.cutting-edge inverter technology Plasma cutting machine CUT-60:◊welding style:to cut with ordinary compressed air◊use ... for carbon steel,alloy steel,stainless steel,cast iron, aluminum,copper and other sheet matal cutting.◊cutting-edge inverter ... do not pollute the environment, more economical than flame cutting machine, high efficiency, enviromental protection;◊perfect protection system: 1. ...