mini laser engraving machine 1,APPLY:Acrylic Board, Clothing, Wood Board, Bamboo, Leather, Clothing, Marble Stone, 2,CE,FDA mini Laser Engraving MachineAcrylic Board, Clothing, Wood ... Tube CoolingPurified recycling water coolingLaser Output Control0-100% No section controls. Soft inner 0-100% AdjustableControl System and DriverHigh Speed DSP control ...