... on 24 h 3.CE Approved 4.Easy operate Diode Pump Laser MarkerSampleTechnical parameters Input voltage:AC220V±20VFrequency:50HzInput power:1. ... -ionized water, distilled water or purified water.·Feature:Diode pumped laser marking machine adopts high-quality semi-conductor module, life time ... jewelry, glasses, auto parts, telecommunications products, plastic buttons etc. Diode Pump Laser Marking machine