... h 3.CE Approved 4.Easy operate Diode Pump Laser MarkerSampleTechnical parameters Input voltage:AC220V±20VFrequency:50HzInput ... water, distilled water or purified water.·Feature:Diode pumped laser marking machine adopts high-quality semi-conductor module ... mainly equipped with the international advanced semiconductor light-emitting diode. diode laser module, scanner head, beam expander, reflect lens, ...