The DFB series high-efficiency high-pressure plate filter has the characteristics of compact installation structure and small volume. The filter element adopts imported glass fiber filter material, which has the advantages of high filtration accuracy, large oil passing capacity, low original resistance, and large pollutant holding capacity. Its filtration accuracy is calibrated with absolute filtration accuracy, and the filtration ratio β 3 β 5 β 10 β 20 ≥ 200, filtration efficiency η≥ 99.5%.