Hm-Led2007-8-20
Through sample test, a conclusion is made that the lumen attenuation doesn't exceed 5% in continuous use for more than 1200 hours and the temperature...
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Hm-Led2007-8-20
Through sample test, a conclusion is made that the lumen attenuation doesn't exceed 5% in continuous use for more than 1200 hours and the temperature...
|