... made polypropylene by spun-boned technology.3. Melt blown pp filter cartridge specification:material : Polypropylene ;length : 10'', 20'', 30'', ... : 55cm, 61cm, 63cm, 65cm;inner diameter : 28mm, 30mm ;filter fineness : 1u/5u/10u/20u/30u/50um ;Max temperature: PP ... 60 centigrade) ;application: a. residential and commercial treatment b. fine chemical, reagent , solvent resin c. coating d. edible oil ...