1.Nws yog cov tshuaj tsis muaj tshuaj lom. Nws tuaj yeem raug siv los ua PVC, cellulose cob thiab hluavtaws roj hmab yas.
2.Nws yog siv rau cov tsis muaj tshuaj txhuas cov khoom ntim, cov khoom noj khoom qab zib, cov duab ua si, zaj duab xis, cellulose xim thiab lwm yam khoom.
3.Nws tseem tuaj yeem siv tau raws li stabilizer ntawm polyvinylidene chloride.