1. The filter element is made of glass fiber/stainless steel mesh imported from the United States, which has the advantages of convenient sewage discharge, large circulation area, small pressure loss, simple structure, small volume, light weight, uniform filter material, etc.2. The compatibility of the filter material is suitable for the filtration of general hydraulic oil.3. The filter element is supported by the solid filter material on both sides and the more stable filter material, which meets the verification of the flow fatigue characteristics of the ISO3724/76 hydraulic filter element.