... IGBT. Little splash,deep welding. I. WELDING MACHINE WITH FIVE YEARS GUARANTEE&INTERNATIONAL QUALITY CERTIFICATE APPROVED Model No. ... CHARACTERISTIC1.IGBT INVERTER TECHNOLOGY,CURRENT-MODE CONTROL,RELIABLE QUALITY,STABLE PERFORMANCE. 2.CLOSED CIRCUIT FEEDBACK,CONSTANT VOLTAGE OUTPUT,WORKABLE ... ENLARGEDS THE WELDING OPERATION SCOPE.NB 250 WITH MMA FUNCTION,ONE MACHINE WITH TWO FUNCTIONS. 8.SMALL SIZE , ...