知识贝壳
知识贝壳
所属栏目：合成革专业英语
The purpose of finishing is to improve the character of service of nonwoven fabrics. Generallytwo finishing ways are carried out before using nonwovens used for synthetic leather which arePVA sizing method and ironing method.3.4.1 PVA sizing3.4.1.1 The pu ......（本文共 9583 字 ） [阅读本文] >>