... system 2.Diode pump laser 3.Mark on metal, plastic,rubber products 4.CNC control Metal marking machineSampleTechnical parameters Input voltage:AC220V±20VFrequency ... serial No., batch No., barcode, 2 -D code, etc. on metal or nonmetal surface (plastic, silicon or porcelain, etc.) which are ... , jewelry, glasses, auto parts, telecommunications products, plastic buttons etc. Metal marking machine with CE