GaAs Lens Co2 Laser Engraver Cutter D: 18 19 20 mm FL: 1" 1.5" 2" 2.5" 3" 4". MCWlaser PVD ZnSe Laser Lens Focus Lens For CO2 Laser Engraver Cutting Machine. Simple operation,fast and convenient. It can print Code, date, batch number, and even QR code ect.
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