gold tool® laser marking & cutting machine 20 watt 1.multiple power laser light source, available for many industries. 2.long life, maintenance- free within 1, 0gold tool® laser marking & cutting machine 20 watt 1.multiple power laser light source, available for many industries. 2.long life, maintenance- free within 1, 00, 000 hours, operated in 24×7 hours […]