6 Drying

Afterretanning,dyeingandfatliquoring,theleathersarehorsedupovernighttoallowexcessliquortodrainoff.Thentheleathersaresammedandsetouttoreducethewatercontentfurther.Atthisstage,theleatherstillcontainsabout50%-60%water.Thisremainingwaterwillhavetobereducedtoa ......      (共12118字)     [阅读本文]>>



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