Laser marking machine 1.Semiconductor metal laser marking machine 2.Water cooling system 3.Diode pump laser 4.CNC control Laser marking machineSampleTechnical parameters Input voltage:AC220V ... or auto-coding, serial No., batch No., barcode, 2 -D code, etc. on metal or nonmetal surface (plastic, silicon ... , auto parts, telecommunications products, plastic buttons etc. YAG laser marking machine with CE