... metals 24 hours continous operation Non-contact processing Laser marking machine for tubesFeatures:German High-speed marking galvo head,high photoelectric ... (gold,silver,titanium);metal oxides,ABS material (electrical appliances case,daily necessities),ink (translucent key-press,printing products),epoxy resin ... laser sources)Galvo postioning precision: 0.005mm Laser marking machine for tubes