... machine 2.Water cooling system 3.Diode pump laser 4.CNC control Laser marking machine SampleTechnical parameters Input voltage:AC220V± ... , figure, graphics or auto-coding, serial No., batch No., barcode, 2 -D code, etc. on metal or nonmetal surface ( ... equipped with the international advanced semiconductor light-emitting diode. diode laser module, scanner head, beam expander, reflect lens, Q-switch, Q ...