Inverter DC ARC Welder,90 amp IGBT welder High duty cycle ,stable arc,energy saving,economical INVERTER TECHNOLOGY ,OEM A. Function ... , little spatter, excellent welding performance 4. Stable current, nice welding shape with high quality of welding bead5. Stable performance, automatic voltage compensation capability.6 ... Warranty. 3. Technical Support. 4. CCC certificate XWD10251 Inverter Welder