1.CE, ISO9001 2.IGBT tech 3.Rated Duty Cycle:60% IGBT welding machine/ welding machine/ac/dc welding machine AC/DC TIG/MMA/CUT welder/Welding Machine(Super200pi) 1Controlled by single chip's integrate circuit, Rate Duty Cycle is 60% .Advanced design, high invert frequency, high duty cycle, saving energy.2. Reactive power correction, IGBT, AC/DC or pulse output , soft switch, inverter with 100 kHz ...