Sib nqus cib, ua cov khoom siv hauv tsev tshwj xeeb, muaj ntau yam kev siv. Nyob rau hauv lub neej txhua hnub, peb tuaj yeem pom ntau lub pob zeb sib nqus siv los ua cov phab ntsa sib nqus, cov hlau nplaum sib nqus, thiab lwm yam, ua kom yooj yim rau tib neeg los lo thiab txav cov ntawv, duab, thiab lwm yam khoom. Tsis tas li ntawd, cov hlau nplaum nplaum feem ntau yog siv los ua ntau yam cuab yeej sib nqus, xws li cov hlau nplaum sib nqus thiab cov hlau nplaum clamps, txhim kho kev ua haujlwm.
Nyob rau hauv kev lag luam teb, kev siv ntawm cov hlau nplaum cib yog ntau dua. Piv txwv li, hauv kev tsim cov khoom siv hluav taws xob, cov khoom siv hlau nplaum tuaj yeem siv los ua inductors, transformers, thiab lwm yam khoom siv hluav taws xob. Ib txhij, sib nqus cib kuj tuaj yeem siv los ua cov hlau nplaum sib nqus kom cais cov ferromagnetic impurities, txhim kho cov khoom zoo. Tsis tas li ntawd, magnetic bricks kuj muaj kev siv dav hauv mining, metallurgy, thiab chemical industries, xws li magnetic mineral processing thiab magnetic iron tshem tawm.