6 Bating
工業(yè)科技

        Bating is a further step in the purification of the hide prior to tanning. The unwanted components consist of some of the protein degradation products,epidermis,hair root,and the“scud” on the surface of the skin and in the hair follicle and pores. Some of......（本文共 8644 字）     [閱讀本文] >>