6 Drying
工业科技

6 Drying图片（共3张） :

        After retanning,dyeing and fatliquoring,the leathers are horsed up overnight to allow excess liquor to drain off. Then the leathers are sammed and set out to reduce the water content further. At this stage,the leather still contains about 50%-60% water. T......（本文共 12118 字, 3 张图）     [阅读本文] >>