Real 2000mw/2w 445nm 450nm Focusable Blue Laser Module Diode High Power Laser Cutting Engraving Machine Tt L Diy Cnc Adjust - Professional Lighting - AliExpress
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Laserland 3.7-4.2VDC 1W/1.4W/2W Blue 445nm 450nm Laser Diode LD Driver Power Supply 2.5A