Toj siab txog cov xav tau ntawm txhua tus neeg muas zaub
Yog tias, txhua tus neeg siv khoom yuav muaj cov nhuav tshwj xeeb. Nrog ntau hom Polyvinyl Alcohol muaj nyob hauv peb cov khoom, peb tuaj yeem kho cov composition kom haum rau cov kev xav tau tshwj xeeb. Yog tias koj tab tom ua haujlwm rau cov formulation ntawm ib qho khoom tshiab lossis ib qho version tshiab ntawm ib qho uas twb muaj, peb muaj kev paub los pab koj kom zoo.