(1) High efficiency, refined design, duration, any powder and mucilage are suitable for sieving. (2) Easily to replace the net, simple operation and convenient washing. (3) Never clog the mesh, no powders fly up, minimum sieving size is 500meshes or 0.028mm. (4) Discharge the impurity and coarse materials automatically, and continuous operation. (5) Unique net-frame design, long life for using, only need 3-5 minutes to replace the net. (6) Small volume, move easily. (7) The most layers of the sieve are about 5, but 3 are suggested.