... working 3.marking speed 7m/s laser marking and engraving machineHW YAG-ZJ50W-II adopts imported high ... iron, copper, aluminium, magnesium, zinc, etcâ?¦), rare metal and alloy(gold, silver, titanium), metal oxides, ABS materials (enclosures ... of electrical appliances, daily necessities), Ink (transparent keystokes, printing products), epoxy resin (envelope of electronic ...