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    safety red laser 30mW

    I wonder if the next laser is safe considering that it has diffraction grading to show not point but line: Aliexpress.com : Buy 650MDLC 30 1235 BL 3in1 Focusable Adjustable (dot/line/cross) 30mw 650nm 660nm Red Laser Module 12mmX35mm from Reliable red laser module suppliers on Wuhan Laserlands...


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