... precision, consistent marking quality;(4) Markings are permanent with high abrasion resistance;(5) Lower use-cost, higher ... Ring laser marking fiber laser beam Mini size with high speed etching engraver for metal/logo/ ... coolingworking conditionstemperature:00c~350c, humidity :0~90%, with no condensationpower supply220V/1Kw 3. Applicable industriesIt is ... laser marking fiber laser beam made in China