LED Thaum Muaj Xwm Ceev

Tag nrho cov khoom ntawm LED thaum muaj xwm ceev yog muaj tswv yim tsim thiab zoo. Zoo siab txais tos rau cov teeb meem thaum muaj xwm ceev, LED teeb lub teeb, teeb pom kev sib nqus LED nrog peb cov kws ua lag luam thiab cov neeg muag khoom nyob hauv Suav.