Lub tshuab no yog tsim rau cov ntaub plaub, tshuaj fiber ntau, qub quilt npog, ntau yam ntaub plaub thiab lwm yam ntaub ntawv raw los qhib thiab tshem tawm impurities. Lub tshuab muaj qhov zoo ntawm kev saib xyuas yooj yim, ob peb hnav qhov chaw, zoo nkauj tsos, siab qhib tso zis ntau thiab ntau daim ntawv thov.
Lub tshuab no tsuas yog siv rau paj rwb, plaub hau luv luv, tshuaj fiber ntau thiab lwm yam khoom siv rau kev qhib thiab tshem tawm impurity. Cov khoom siv tuaj yeem raug pub ncaj qha tom qab qhib los ntawm kev pub mis tsis siv neeg lossis kev pub mis, lossis xa mus rau cov txheej txheem tom ntej ntawm cov khoom siv paj rwb los ntawm tus kiv cua. Lub tshuab muaj qhov zoo ntawm kev saib xyuas yooj yim, ob peb hnav qhov chaw, zoo nkauj tsos, muaj peev xwm tshaj tawm, thiab ntau yam kev thov. Qhov loj ntawm lub tshuab no muaj nyob rau hauv φ500, φ700, φ1000, thiab qhov qhib ceev tuaj yeem hloov kho.
