Nqe lus piav qhia:
Cov ntsiav tshuaj tau nias yog ib hom khoom siv uas compresses cov ntaub ntawv granular rau hauv cov ntsiav tshuaj thiab yog siv dav hauv kev lag luam kws tshuaj. Nws tuaj yeem tsim ntau yam ntsiav tshuaj ntau yam xws li tshuaj ntsiav tshuaj uas muaj ntau cov ntsiav tshuaj, cov ntsiav tshuaj muaj qab hau, thiab lwm yam.
Nta:
Cov ntsiav tshuaj siv hluav taws xob cov xov tooj muaj kev ua haujlwm siab ntau lawm ua lag luam, vim tias cov ntaub ntawv kho cov xov hluav taws xob hloov kho kom zoo nkauj. Nws muaj peev xwm pub tsis tu ncua, zaws, thiab cov ntaub ntawv tawm, ua kom cov khoom siv tau ntau dua thiab txhim kho kev txhim kho ntau lawm. Piv txwv li, qee cov ntsiav tshuaj loj teb cov tshuaj nias tuaj yeem tsim ua kaum txhiab lossis txawm cov ntsiav tshuaj ntau dua ib teev.
Cim npe nrov: Vuv Ntsiav Xovxwm Tshuab, Tuam Tshoj Cov Ntsiav Ntsiav Tshuaj Xovxwm Tshuab Cov Chaw Tsim Tshuaj, Chaw Tsim Tshuaj, Hoobkas