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SPEED DOESN'T MATTER?! Auto-Darkening Welding Helmet Đăng Tải Bởi Kênh AvE   2 years ago

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Auto-darkening filters are UV and IR opaque. The only thing that darkens is the visible spectrum light. Electronic filters actuate in less than a millisecond. So, electronic welding helmets are safer than flip downs. You'll never flash yourself with an auto-darkening helmet.
Machining Chanel Abom79 https://www.youtube.com/user/Abom79

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