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Kev Taw Qhia Txog Kev Siv Polyacrylamide
Kev Taw Qhia Txog Kev Siv Polyacrylamide Peb twb tau nkag siab txog cov haujlwm thiab cov teebmeem ntawm cov tshuaj kho dej kom ntxaws.Muaj ntau ntau qhov sib txawv raws li lawv txoj haujlwm thiab hom.Polyacrylamide yog ib qho ntawm cov kab hluav taws xob polymers, thiab nws cov saw molecular contai ...Nyeem ntxiv