... TIG/MMA-200 1.lightness and carry easily 2.high efficiency 3.high duty cycle dc inverter arc argon welding machine ... maintenance, etc.; 2.Weldable materials: stainless steel, low carbon steel, high strength steel and Cr-Mo steel, copper, titanium; 3.Advanced ... save gas and reduce costs; (2), high-frequency booster circuit arc and arc, igniting a high success rate, good spot synchronization; 6.Improve ...