... voltage. It is widely used for Industrial Cutting, Laser Engraving, Laser industrial processing, Quencher, Cutting & Engraving on Leather, Laser Medical Machine, Infrared detecting, etc ... in beauty, gynecology and other area. Co2 Laser Tube: ModelLengthWorking LifeWorking Voltage(kv)Best Operating Current(mA)Power Stability(W)30 W 7001800-3000 ...