?dopts advanced IGBT inverter technology,using non-crystal core and power units. Reliable, portable, light and high efficiency (>85%),can meet IEC974 safety standard. ?table and concentrative arc makes the best welding line and soldering quality. Very suitable for welding line with special requirements. ?ery convenient to operate by MMA welding,suitable for welding stainless steel,mild steel, steel, steel alloy, etc.