Cov Khoom Txheej Txheem Tam sim no nrog kev vam meej ntawm tib neeg thiab kev txhim kho thev naus laus zis, kev lag luam teeb pom kev lag luam kuj tau tsim los ntawm leaps thiab ciam teb, cov uas, muaj cov teeb pom kev zoo tshaj plaws LED.Vim li cas yog?Vim li cas LED teeb muaj ntau yam txiaj ntsig.Rau Piv txwv li, kev txuag hluav taws xob, kev tiv thaiv ib puag ncig ...
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