TIG/MMA, or TIG only Advanced IGBT inverter technology, energy-saving Melted tungsten electrode, non-contact HF arc start method, which avoids burning through the thin workspace Portable, energy-saving, light noise, easy to carry Gas after flow time can be matched between 1-10s, With O.C & O.H protection, for long-term using Capable of welding stainless steel and other easily oxidated nonferrous metal and alloy steel, such as MIG, TIG or other alloy.