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 is pressure-resistant and suitable for applications requiring high-pressure filtration, such as in the preparation and processing of powders. The PP filter cartridge (polypropylene melt-blown filter cartridge) is made from non-toxic and odorless polypropylene as the raw material, using the internationally standard gradual diameter process. During thermal bonding, the fibers form a three-dimensional microporous structure, with the micropore diameter 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.。