1.CE, ISO9001 2.IGBT tech 3.Rated Duty Cycle:60% IGBT welding machine/ welding machine/ac/dc welding machine AC/DC ... frequency, high duty cycle, saving energy.2. Reactive power correction, IGBT, AC/DC or pulse output , soft switch, inverter with 100 ... -compressives strength,strongly resistance to shock loading,nondeformable.Super200PI:IGBT welding machine/inverter welding machine/ ac/dc welding machine ...