Cov Kev Daws Teeb Meem Tshwj Xeeb Rau Cov Neeg Siv.
Peb cov polyvinyl alcohol khoom tuaj yeem tsim los ua kom haum rau ntau hom kev lag luam kom koj ntseeg tau tias koj tau txais ib qho khoom uas haum rau koj cov nhuav. Peb ua haujlwm los ntawm lowering viscosity mus rau altering formulation kom haum rau cov neeg siv kom tau txais cov txiaj ntsig zoo tshaj plaws.