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What is the role of wetting and penetration? Penetration is a more important role in the refining process. One is that during the growth of cotton, the galacturonic acid of the pectin material slowly combines with Ca2+ and Mg+ in…

Dyes used for dyeing protein leather fibers are also known as leather dyes. Leather dyes are soluble in water, under the action of acidic medium and leather fibers’ onset suction compound; solid color; coloring process is called dyeing. Dyes for…