4 Dyeing
工业科技

4 Dyeing图片（共1张） :

        Chrome leathers are dyed either discontinuously in drums or continuously on the machines(through-feed dyeing,spray dyeing or dyeing by roller coating). When they are dyed in drums,it is usually carried out during the processes of retanning and fatliquroin......（本文共 11845 字, 1 张图）     [阅读本文] >>