laser marking machine for steel plate 1.The life reach 10,000 hours 2.24 hours ... working 3 for metal parts laser marking machine for steel plate can marking all of metal parts and non-metal productions ... , aluminium, magnesium, zinc, etcâ?¦), rare metal and alloy(gold, silver, titanium), metal oxides, ABS materials (enclosures of electrical appliances, daily necessities ...