The impurity and uneven granule in various materials, such as mine, chemistry industry, medicament, foodstuff, plant etc, can be separated up to 100%, it adapts especially to polish and separate the corn residue in northeast China, and makes it into refinable corn residue, so the additional value will be improved. Here is completely close and no dust, and there are all type separation machines. The customers will be welcomed to carry the material and test machines.