Folder filter element Folds the type polypropylene filter element is one kind of stationaryin-depth filter, can be suitable to each kind of pressure and theparticle filters the request, the complete structure uses the purepolypropylene to make, does not use the surface active agent or thecementation medicinal preparation, the product has the widespread chemistry serviceability, its nominalaperture specially is suitable from 60um to 0.1um to filters, withpurely filters, and has the very low medium to fall off with the highflux long life