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K40 Series Co2 Laser Tube 40W Length 700mm Glass Lamp For DIY Laser Engraving Cutting Machine 2030 K40 - AliExpress
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SPT C35 35W CO2 Sealed Laser Tube for Small and K40 Laser Engraving Machine - LightObject | Professional Laser Cutters and Engravers Solutions
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Amazon.com: Cloudray CO2 Laser Tube 40W 45W Length 720mm Dia.50mm Glass Tube With Metal Head For 35-45W CO2 Laser Engraver Cutter : Arts, Crafts & Sewing
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