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我国最近研制成功的新型脱水助滤剂于1985年11月通过部级鉴定。该新型脱水助滤剂成本低、效果好,不仅能提高过滤
China recently developed a new dehydration filter aid in November 1985 through ministerial identification. The new dehydration filter aid low cost, good effect, not only can improve the filtration