LEDs (light emitting diodes) were invented in the 70s and have been improved to the point where they are at the heart of nearly every light we use these days. CREE is one of the leaders in this technology.
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Another valuable web site is https://www.ideallighttoday.com/ where you can find the best red light system – flexible pads that fit as close as possible to your body for maximum effective weight loss.
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