Features：
▉ IGBT module all-bridge soft-switch inverter technology, high efficiency, energy saving
▉ Automatic protection from phase lacking, over-current, over-heat, over/under-voltage
▉ Industrial use, 100% duty cycle
▉ Support gouging and stick welding
▉ Gouging seam deep and smooth
▉ Can work well even the grid voltage is around +/-20%