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Amazon.com: LASER TREE Laser Engraver Module, 20W Laser Engraving Cutting Module CNC, 4W Optical Power Laser Module, Adjustable Focal, 450nm Laser Head for Laser Engraver Cutter Machine DIY Wood Paper Leather,12V
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.jpg "455nm 4W Blue Semiconductor laser from Laser Manufacturer")
455nm 4W Blue Semiconductor laser from Laser Manufacturer
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