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How long can they “glow”?

April 26, 2017glow

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How long can they “glow”?

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Normally, they can glow between 4-12hoursmal temperature(12-25 degree), which is long enough for practical use. And if any other application i srequired. the light can either be a steady long glow or a very intense short duration glow depending on the ratio of the chemical mixture,.