1 ua ntej yuav siv, xyuas tias cov rooj tog zaum xyoob yog ntseeg yam ntxwv.
2, ib txheej bacteria ntawv xyoob rooj tog thiab lwm yam ntaub ntawv tag nrho, thov koj muab ntxuav thiab zoo huv si substrate puas khoom nrog cov xyoob rooj tog, xyuas kom meej tias tsis impurities, uas tsis yog-greasy, thiab thiaj li ua. Chaw txais nyiaj ua haujlwm puas yuav tsum tau kiag li ca, yuav tsum muaj tsis muaj ib lub menyuam pob. Substrates cov khoom ntoo, xyuas kom cov khoom ya raws cov lus qhia thiab ya raws cov ntsiab lus ntawm rooj tog xyoob ze rau zam tau rooj tog puas substrate pawg Hygroscopicity thiab expansion los yog teeb meem loj shrinkage thiab puas rooj tog zaum.
3, cov rooj tog zaum xyoob yuav siv tau cov nplaum rooj nrog lwm cov ntaub ntawv, ua tib zoo xaiv nplaum, nplaum distributor txhawb cov nplaum ntau, kev kawm ntawv thiab pab txhua yam.
