This sreies,our patent product,is used in grinding non-inflammable and non-explosive stuff with Moh's hardness below 9.3,humidity less than 6%,such as barite limestone,ceramice,slay,etc.Fineness of final product can be adjusted between 80 and 425 meshes and part of them can add up to 1000 meshes.Through being equipped particular parts,the machine can produce coarse powders ranging from 30 to 80 meshes