Kev paub

Dab tsi tseem ceeb yuav tsum tau them sai sai rau thaum khaws cov hlau nplaum...

Dab tsi tseem ceeb yuav tsum tau them sai sai rau thaum khaws cov hlau nplaum muaj zog

Ntev npaum li cas lub zog nqus ntawm NdFeB cov hlau nplaum muaj zog tuaj yeem...

Ntev npaum li cas lub zog nqus ntawm NdFeB cov hlau nplaum muaj zog tuaj yeem khaws cia thaum siv

Sib nqus tivthaiv ntau lawm yuav ua li cas kom nkag siab lub ntsiab lus txhai...

Sib nqus tivthaiv ntau lawm yuav ua li cas kom nkag siab lub ntsiab lus txhais ntawm cov hlau nplaum