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pozzolith

1、普蜀里

...硫酸盐纸浆废液经发酵除去糖分再加入一些其它化学成分,研制成功了一种以木质素磺酸盐为主要成分的减水剂,称之为普蜀里(Pozzolith),并于1937年取得专利。

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