3 Liming
工业科技

        Unhairing and liming may be carried out either separately,or at the same time by immersing the hides and skins completely in lime and sulfide liquor.3.1 Liming SystemStraight lime liquors of 2 parts lime per 100 parts water are chiefly used for skins that......（本文共 9857 字）     [阅读本文] >>