... IGBT welding machine 1.IGBT inverter tech,stable performance 2.Stable welding arc,llittle spatter 3.Energy star 4.CE IGBT welding ... machine1.IGBT inverter tech,current-mode control,reliable quality,stable performance2.Closed loop feedback control,constant voltage output, ... ,remove the tip ball after welding,reliable arc starting5.Suitable for work piece with a thickness of more than ...