Lately, teb ntawm cov ntaub ntawv tshuaj raw li thiab cov down, leveled tua tag nrho. Nrog cov tshuaj kev lag luam kev, ntau thiab ntau tau koj yuav ua ntaub ntawv thiab cov khoom rau hauv ntau lawm thiab lub neej, barium stearate yog ib yam ntawm ntau lug siv cov ntaub ntawv. Lub npe no tej zaum yuav peb tsis paub nrog, tab sis nws cov ntaub ntawv yog wide heev xwb, thiab ntawm no qhia rau koj txog txoj kev siv.
1. no yam khoom siv raws li qib-kub lubricants, kub thiab kub stabilizer additives.
2. qhov khoom siv thaum tshav kub kub stabilizers cov khoom uas PVC.
3. cov khoom yog siv raws li tus neeg saib xyuas waterproofing.
4. ua qhov khoom mus sij hawm ntev kub kawm yeej zoo zog, thiaj li yuav siv tau raws li cov khoom uas siv roj hmab kub siab hmoov.
5. cov khoom muaj zoo mus sij hawm ntev thaum tshav kub kub ua hauj, tiam sis kuj zoo. Cov khoom yuav siv ua muag khoom ntawm tus mos mas tej yam khoom muaj cadmium los yog zinc nyob rau hauv lub qhov zoo li.