Dab tsi yog lub hauv paus ntsiab lus whitening ntawm fluorescent whitening agent?
Cov neeg saib xyuas qhov muag pom tau tuaj yeem ntxuav tawm
Vim li cas qhov muag pom kev ci ntsa iab Tinopal CBS-X
Koj puas ua haujlwm li cas optical brighteners ua haujlwm
dab tsi yog ntaub plaub
Ua optical brighteners fade khaub ncaws
Abaca yog dab tsi
Dab tsi yog Sisal
Yog optical brighteners muaj kev nyab xeeb
Fluorescent whitening agent yog fluorescent dye, tseem hu ua dawb dye, thiab complex organic compound.
