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