Advanced IGBT Inverter Technology:Powerful welder capable of welding mild steel, weld steel, stainless steel and cast iron. IGBT power device with unique control mode improves the reliability of welding machine Professional ETL Certificate:The welding machine has ETL certificate for added safety. Each MMA welder device undergoes a strict inspection to its reliability and efficiency. Built-in anti-stick, hot start and Excellent Arc stability. Portable Design:This welder features a easy carrying handle, compact design, easy for translation and storage. Very convenient, can be used anywhere you need Energy Efficient:Reduce the damage of Copper and Iron, obviously increase the welding frequency, and energy-conserving result is remarkable. Closed loop feedback control, the output voltage is stable, strong adaptability for electricity network. Multi Use: The MMA welder is suitable for welding stainless steel, mild steel, aluminum and other metal materials.