... 1.lightness and carry easily 2.high efficiency 3.high duty cycle dc inverter arc argon welding ... 2.Weldable materials: stainless steel, low carbon steel, high strength steel and Cr-Mo steel, copper, titanium; ... rate of 85%, no-load loss, using non-adjustable, easy to use, easy to carry, reliable ... performance:(1), gas adjustable delay 0-10S, save gas and reduce costs; (2), high-frequency booster circuit ...