Our factory make P84 needle punched felt. We import Germany machine: DILO,Brucker ... Permeability200 L/dm2.min Porosity84%Note1, The P84 filter fabric finishing process for this product include thermal ... singeing, calendering.2,The parameters of P84 filter fabric above come from ideal lab-condition, the ... only P84 filter fabric ,We can also make : PET,PP,PPS,GLASS FIBER,PTFE,PI,NOMEX needle felt.This will ...