638nm 100mw Red Fat Thick Beam Laser Diode Module For Stage Light Bar KTV Night | Being Patient
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Single-Mode To18-3.8mm 150MW 638nm Red Laser Diode - China 150MW Red Laser Diode, 150MW 638nm Laser Diode | Made-in-China.com
637nm 1.2w 638nm Red Laser Diode LD HL63283HD Brand New TO5 9.0mm: Amazon.com: Industrial & Scientific