Low power sieving machine (vertical screen) is designed for space-constrained work environment and research and development, it does not require a lot of space with the ordinary round screen can provide the same capabilities. The unique dual-motor design, the screen surface produces three-dimensional motion, effectively dispersed and filtered screening material. Since the bottom of a straight row design, sifted material discharged more smoothly in the materials coarse screening applications, than the equivalent diameter of the ordinary round screen has a higher throughput. Witt low sieve (vertical screen) is widely used in chemical, food particles coarse sieve materials or product packaging, it is able to provide fast and efficient removal of knot groups and increasing degree of loose materials, processes in preparation for the next one .