Inverter DC ARC Welder,High duty cycle, stable arc,energy saving,economical,INVERTER TECHNOLOGY, ... procedure in a maximum way3. Stable current, nice welding shape with high quality of welding bead4. Easy for arc starting, little ... Year Warranty. 3. Technical Support. 4. CCC certificate ZX7-200IGBT dc inverter Module IGBT arc 160A IGBT Welder