... .IGBT inverter tech,current-mode control,reliable quality,stable performance2.Closed loop feedback control,constant ... arc, little spatter,deep penetration,beautiful shaping,high welding efficiency4.Slow wire feeding during arc ... ,simple operation,economical and practical7.Great reduction in magnetic loss obviously enhances the welding efficiency ... *540600*350*580 Good quality IGBT welding machine(CCC&CE)