Lesson 3 Milling and polishing
工業(yè)科技

        Generally high-grade synthetic leather should undergo finishing process. Through variousfinishing,the softness,smoothness and gloss of leather can be increased,or pattern varieties areimproved,such as suede,dry-milled leather,boarded leather and embossed ......（本文共 11099 字）     [閱讀本文] >>