6 Wet White Process for Chrome Leathers and Chrome-free Leathers
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6 Wet White Process for Chrome Leathers and Chrome-free Leathers圖片（共4張） :

        6.1 The Concept of Wet White Process The wet white process was first recommended as long ago as the early 1980’s. Since its initial introduction to the leather industry a number of chemical companies have developed materials for use as wet white pretannin......（本文共 8620 字, 4 張圖）     [閱讀本文] >>