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    I found a laser on YouTube that can ignite cardboard boxes from 300 meters away? And it's only 140 watts?

    Sunglad Lasers has recently developed a laser capable of igniting cardboard boxes 300 meters away. It only has 140 watts; I don't know how they manage that. I watched their test video on YouTube. The product page states that the center spot diameter is 8 micrometers, and M² ≤ 1. I want to buy it...
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    Review On Sunglad Lasers- 120W IR Lasers

    I bought a 120-watt infrared laser from Sunglad Lasers. I'm confused: why is there a red dot when it's turned on? Aren't infrared lasers supposedly invisible to the naked eye? 😅 I tested it, and it quickly set cardboard boxes on fire. I pointed it at a cockroach in my house, and it quickly...
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    Has anyone purchased lasers from Sunglad Lasers?

    Their engineers posted a lot of laser videos on Reddit. That guy is always shooting lasers everywhere, which is annoying. But those lasers look interesting. I want to buy one to see. Has anyone bought a laser from them? I want to refer to it. Thanks


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