100% polypropylene melt-blown water filter, fitering fineness about 1um-100um, elementray filtration 100% polypropylene melt-blown water filter,fitering fineness about 1um-100um ... , rusty suspensions, etc.Suitable for variou kinds of filter cartridge, widely used as elementary filtration.Length species: 5', 10', 20',30', 40 ...