... power correction, IGBT, AC/DC or pulse output , soft switch, inverter with 100 kHz high frequency;3. Compact structure, stable welding current ... TIG, MMA and CUT;5. The model with P means function of pulse with 9 regulator knobs, and the model without P ... ,strongly resistance to shock loading,nondeformable.Super200PI:IGBT welding machine/inverter welding machine/ ac/dc welding machine IGBT AC/DC TIG ...