... experience 3.ISO 9001:2008 100% Acrylic nonwoven needle punched felt 1.Good air permeability needle felt2.Excellent chemical resistance and ... 4.High precision of filtration5.The technic data of the felt is as follows: HZ Filter FeltREF CODE:HZFF-AC- ... plain,twill,satin construction,any dimension is available. 2.needle felt sieriesMade of polyester,polypropylene,acrilic,PPS,fiberglass,PTFE,P84,Nomex ...