Efficiency, energy saving, compact and stable arc, good welding effect, high no-load voltage, good force compensation capability, and multi-purpose. It can weld stainless steel, alloy steel, carbon steel, copper, and other colored metals. It can be applied to electrodes of different specifications and materials, including acidity, alkalinity, and fibers. It can be used at high altitudes, outdoors, and both indoors and outdoors. Compared to similar products at home and abroad, it is compact, lightweight, easy to install and use. 2-year warranty