JPPC series 3-in-1 composite cartridge adopts sandwich design: the outer layer is 5-20μm one-piece PP microfiber depth-type filter material or PE microporous filter material, which is used as the pre-treatment of filtration and can effectively block various fine particles in the liquid; the middle layer is the high-efficiency filter media layer (including but not limited to activated carbon, silver-carrying carbon, diatomaceous earth, silica phosphorus crystal and other filter materials), which is used to remove the The middle layer is a high efficiency media layer (including but limited to activated carbon, silver-carrying carbon, diatomaceous earth, diatomite crystal and other filtration materials) to remove residual chlorine, odor, odor, sediment, pigment, volatile organic compound (VOC) and other specific pollutants from the filtrate; the inner layer is a more precise 1μm microfiber filter material or PE microporous filter material to prevent carbon powder particles or fine pollutants from flowing out. This composite structure of JPPC series products can give full play to the good particle filtration ability of meltblown cartridge and the high efficiency adsorption ability of filter media, enhance filtration efficiency and save filtration space, which is a high-efficiency composite filtration product.