



Daim ntawv thov
Yuav ua rau hauv cov hluav taws kub, av qeeg-tiv thaiv cov lus qhia, cov khoom siv hluav taws xob, thiab xws li hluav taws kub, thiab hluav taws kub-tiv taus thiab cov khoom siv kub-tiv thaiv tsev.
Tom qab etherification nrog butanol thiab methanol, nws tuaj yeem siv los ua cov tsho tiv no ua kom tsim cov txheej txheem hlau thiab cov amino-resin cov khoom siv hluav taws xob zoo nkauj rau cov tsheb thiab hluav taws xob.
Tom qab etherification, nws tuaj yeem siv los ua ib daim ntawv tus neeg saib xyuas kev kho mob xws li anti-ntsws banknotes thiab daim duab qhia ua tub rog.
(5) Nws sib xyaw melamine thiab formaldehyde cob nrog cov khoom noj nyoos, cov roj hmab ua kom nruj thiab cov roj hmab ua kom zoo nkauj.
Lub Sijhawm Post: Dec-16-2024