... years' experience 3.ISO 9001:2008 100% Acrylic nonwoven needle punched felt 1.Good air permeability needle felt2.Excellent chemical ... technic data of the felt is as follows: HZ Filter FeltREF CODE:HZFF-AC-500NAME:Acrylic Filter FeltFiber MaterialAcrylicScrim ... ,satin construction,any dimension is available. 2.needle felt sieriesMade of polyester,polypropylene,acrilic,PPS,fiberglass,PTFE,P84 ...