Laser marking machine 1.Semiconductor metal laser marking machine 2.Water cooling system 3.Diode pump laser 4.CNC control Laser marking machine SampleTechnical ... , distilled water or purified water.·Feature:Diode pumped laser marking machine adopts high-quality semi-conductor module, life ... No., batch No., barcode, 2 -D code, etc. on metal or nonmetal surface (plastic, silicon or porcelain, etc.) ...