The invention is concerned ultra filtration prepare method of poly ( vinylidene fluoride ) flat with grads structure.

本发明公开了一种梯度结构 聚偏氟乙烯 平板超滤的制备方法.

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The invention discloses a method for separated recycle waste lye via ultra - filtration film.

本发明公开了一种超滤膜分离回收废碱液的方法及装置.

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