Inverter DC ARC Welder,High duty cycle, stable arc,energy saving,economical,INVERTER TECHNOLOGY,CEM A. Function and features1. Adopted advanced full-bridge inverter ... shape with high quality of welding bead4. Easy for arc starting, little spatter, excellent welding performance 5. Stable performance ... 3. Technical Support. 4. CCC certificate ZX7-200IGBT dc inverter Module IGBT arc 160A IGBT Welder