It is related to the powder industry and can be used to filter impurities in powder, ensuring the purity of the powder. This type of filter cartridge has pressure resistance and is suitable for applications requiring high-pressure filtration, such as in the preparation and processing of powder. The PP filter cartridge (polypropylene melt-blown filter cartridge) uses non-toxic and odorless polypropylene as raw material and is produced using the internationally common gradual diameter process. During thermal bonding, the fibers form a three-dimensional microporous structure, with micropore diameters gradually distributed from the inside out. It integrates surface, deep, and coarse-to-fine filtration, capable of intercepting impurities of different particle sizes. It features high flow rate, corrosion resistance, high-pressure resistance, and low cost.。