Xov Xwm Txog Lub Tuam Txhab
-
Kev Taw Qhia Txog Kev Siv Polyacrylamide
Kev Taw Qhia Txog Kev Siv Polyacrylamide Peb twb nkag siab txog cov haujlwm thiab cov teebmeem ntawm cov neeg sawv cev kho dej kom ntxaws. Muaj ntau qhov kev faib tawm sib txawv raws li lawv cov haujlwm thiab hom. Polyacrylamide yog ib qho ntawm cov polymer polymers linear, thiab nws cov saw molecular muaj ...Nyeem ntxiv