Inverter DC ARC Welder,90 amp IGBT welder High duty cycle ,stable arc,energy saving,economical INVERTER TECHNOLOGY ,OEM A. Function and features1. IGBTAdvanced ... inverter technology of module 3. Easy for arc starting, little spatter, excellent welding performance 4. Stable current, nice welding shape with high quality ... Year Warranty. 3. Technical Support. 4. CCC certificate XWD10251 Inverter Welder