pp sediment filter cartridge 1. with groove to enlarge the flow 2. 5micron with pure 3.good quality for filter cartridge 1.Materails Structure ... ” 30” 40”, it can be customized.7.ApplicationPre-treatment for RO,EDI,NF,etc Super-purified water,drinking water abd household ... ,wine,IT,printing and dyeing,textile,chemical fiber,etc. pp sediment filter catridge