The modified nat-ural macromolecular chelating agent including starch and fiber, are stable, effective, and less toxic, with lowcost and wide source.
英
美
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改性天然高分子螯合劑其原料淀粉和纖維素是一種來(lái)源既便宜又廣泛的天然高分子,經(jīng)改性后的產(chǎn)品對捕集重金屬離子具有低成本、高效、低毒的優(yōu)勢。
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国内精品美女A∨在线播放xuan