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2 Main Constituents of Hides and Skins
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2 Main Constituents of Hides and Skins

        Fresh hides or skins consist of water,proteins,fatty materials,mineral salts and some other substances. In all these constituents,the proteins are important for leather making. These proteins are collagen,keratin,as well as elastin,albumen,globulin,mucins......(本文共 9286 字, 1 张图)     [阅读本文] >>