Lub teeb pom kev ntawm cov teeb liab teeb liab tam sim no feem ntau muab faib ua ob pawg, ib qho yog LED teeb qhov chaw, lwm qhov yog qhov chaw teeb pom kev zoo, uas yog lub teeb incandescent, low-voltage halogen tungsten teeb, thiab lwm yam, thiab nrog cov txiaj ntsig zoo ntawm LED. lub teeb ci, nws yog gradual ...
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