Sib nqus hmoov rov ua dua tuaj yeem txo cov nqi zoo, vim tias cov hmoov hlau nplaum ntau yuav tsum tau ua haujlwm hauv cov txheej txheem ntawm cov dej phwj tuaj, yog li kev noj cov hmoov hlau nplaum yuav loj heev, uas yuav ua rau tus nqi nce, tab sis nws yuav ua tau zoo tom qab rov ua dua. . Kev siv cov hmoov sib nqus yog txo, yog li txo tus nqi.
Lub purity thiab rov qab tus nqi ntawm cov hmoov hlau nplaum tom qab siv los ntawm cov kev kho mob tsim nyog kuj yog siab heev, yog li ntawd cov dej purification nyhuv ntawm reuse kuj zoo heev, thiab nyob rau tib lub sij hawm, lub pov tseg ntawm magnetic hmoov tsis tshwm sim, thiab Lub hom phiaj ntawm kev txuag cov peev txheej tau ua tiav.
Rau cov dej phwj tuaj kho, nws txuag tau ib feem loj ntawm cov peev txheej, kom cov dej phwj tuaj kho tsis nruj, thiab kev ua haujlwm tuaj yeem ua tiav ib txwm, yog li ua tiav qhov kev yeej-yeej.