EN877 cov khoom siv hlau cam khwb cia feem ntau yog xa tawm mus rau cov teb chaws tsim kho hauv Tebchaws Europe.
Lawv yuav raug siv rau cov tsev cov dej ntws tawm.
Lub neej ua haujlwm zoo ib yam li lub tsev, thiab ntxiv cov epoxy resin tuaj yeem ua rau lub neej ua haujlwm ntev dua li 15 xyoos.
Epoxy resin txheej muaj cov yam ntxwv ntawm acid tsis kam, alkali tsis kam, hnav tsis kam, siab tsis kam, cuam tshuam tsis kam thiab pwm tsis kam.
