Using 100% food grade Polypropylene(PP) as material,the filter cartridge contains no wetting agents,solvents,antistatic agents or binders; Each micron rate has its string pattern to ensure the filtration effect. The filter cartridge has a better dirt-holding capability than the general PP Sediment Melt Blown Filter Cartridge. Apply to liquid filtration in the fields of petroleum,chemical,electronic,electroplating,medicine and food production.