Hnub no, kuv coj koj nkag siab txog daim iav chav dej LED hauv daim iav tiv thaiv ib puag ncig. Ua ntej nkag siab txog daim iav tiv thaiv ib puag ncig, peb xub paub txog daim iav nyiaj thiab daim iav txhuas. Daim iav nyiaj yog daim iav plated nyiaj thiab daim iav txhuas yog daim iav aluminized. Daim iav uas muag ntawm khw feem ntau yog daim iav nyiaj lossis daim iav txhuas.
Nrog kev txhim kho lub sijhawm, ntau thiab ntau tus neeg pom zoo nrog lub tswv yim ntawm kev tiv thaiv ib puag ncig. Thiab daim iav nyiaj thiab daim iav txhuas vim tias sab nraum qab ntawm cov xim muaj cov hlau lead, cov xim pleev xim yog teeb meem rau tib neeg kev noj qab haus huv, yog li kev lag luam maj mam nthuav tawm lub tswv yim ntawm daim iav tiv thaiv ib puag ncig. Daim iav tiv thaiv ib puag ncig kuj tseem hu ua tooj liab dawb iav
Nws cov xim tom qab yog lub teeb grey. Cov iav uas tsis muaj tooj liab tsis muaj npe yog lub npe tom qab daim iav tsis muaj tooj liab nrog cov xim pleev xim dawb, uas tiv taus oxidation thiab xeb ntau dua li iav.
