Features of Hooksrtipe flat screen ⅠDifferent layers with different density. To arrange these layers reasonably and exactly, the screening effect will become more and better. Screen with different mesh counts with suitable opening sizes of the backing plate. Doing so, our products will obtain the largest effective area under the condition of enough strength. ⅡThe bottom layer with low mesh counts has coarse wire and can be tight bonded to the backing to make up one block. So the strength of whole screen mesh get up and the useful life is increased Ⅲ The mesh, divided into many independent small units by grids of the backing plate, can prevent rigs of tears from spreading overmuch. Accessory prepared rubber stoppers can be used to repair damages. By doing so, the operator can cut down the stop time and reduce the cost.