... Wire Feeder IGBT. Little splash,deep welding. I. WELDING MACHINE WITH FIVE YEARS GUARANTEE&INTERNATIONAL QUALITY CERTIFICATE APPROVED Model No. NBC ... ,DEEP WELDING PENETRATION,GOOD WELDING BEAD. 4.SLOW WIRE FEEDING DURING ARC STARTING,REMOVE THE TIP BALL AFTER WELDING , ... WHICH ENLARGEDS THE WELDING OPERATION SCOPE.NB 250 WITH MMA FUNCTION,ONE MACHINE WITH TWO FUNCTIONS. 8.SMALL SIZE ,LIGHT WEIGHT, ...