1. IGBT high power Inverter Technology 2. Easy for striking arc, little spatters, little welding deformation, good appearance of weld 3. Have fantastic external and dynamic characteristics and also have the function 4. The inverter technology can insurance the welding voltage changed in voltage fluctuation and arc length 5. Litter spatters, little deformation 6. Low no-load cost and have electrical prevention function 7. Not only used in carbon steel and low alloy steel welding, but also used in alloy steel, high alloy, copper, silver, molybdenum, titanium, etc.