Cov Kev Daws Teeb Meem Nqe Pheej Yig
Yuav ua li cas txog kev yuav cov tshuaj polyvinyl alcohol zoo tshaj plaws ntawm tus nqi qis? Vim peb muaj kev txuas zoo nrog peb cov neeg muab khoom thiab muaj cov khoom txaus, peb muaj peev xwm txo nqi yam tsis cuam tshuam ntau rau qhov zoo. Qhov no ua rau peb cov neeg siv khoom txuag nyiaj thaum tau txais cov adhesive muaj zog ntxiv. Yog li, peb lav tias yog cov polyvinyl alcohol muaj peev xwm thiab muaj txiaj ntsig zoo tshaj plaws ntawm tus nqi zoo tshaj plaws thaum tseem khaws cov qauv zoo.