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OMTech K40+ Laser Engraver Motherboard Upgrade, Replacement Control Board for CNC CO2 Laser Cutter Engraver Machines with Rotary Axis Autofocus Support, Smoothie Mainboard for LightBurn K40 Engraving
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VEVOR 40W CO2 Laser Engraving Machine 300x200mm K40 Cutting Laser Engraver with USB Tools Art Work High Compatibility|Carbon Dioxide Lasers| - AliExpress
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