1) DC TIG INVERTER WELDING MACHINE 2) POWER SAVING welding MACHINE 3) HIGH EFFICIENCY WELDING MACHINE 4) PORTABLE ,HIGH Use: light ... other electrode for welding low carbon steel, carbon steel, alloy steel, etc.; Advanced inverter technology: Inverter frequency up to ... high efficiency,energy saving and portability2) stable welding arc3) can welding stainless steel,alloy steel,carbon steel,copper and ...