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Amazon.com: (40) Laser Head, Blue Laser Module, Ultra-Fast Engraving of Stainless Steel and Oxidized Metal, high Transmittance, with PWM TTL
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Amazon.com: CNC 24V blue laser module for laser engraving and cutting machine 24V with PWM/TTL can cut 3mm balsa wood can engrave stainless steel (40×40×70mm) : Arts, Crafts & Sewing
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