Yitongmelt-blown filter cartridgesare made of avirulent and flavorless polypropylene particles, after several process like,heating, melting, spinning, drawing, forming to tubular deep filter cartridge. The melt-blown filter cartridge have an outstanding chemical resistance and strong pollutant carrying capacity. The melt-blown filter cartridge has a durable service life and cost effective advantages. The melt-blown filter cartridge provides a depth loading liquid filtration at ratings from 1 micron to 100 micron. Thus the melt-blown filter cartridge offer a consistent of dirt loading throughout the usage of the filter cartridge.