6 Wet White Process for Chrome Leathers and Chrome-free Leathers

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 张图）     [阅读本文]>>