... experience 3.ISO 9001:2008 100% Acrylic nonwoven needle punched felt 1.Good air permeability needle felt2.Excellent chemical resistance and ... twill,satin construction,any dimension is available. 2.needle felt sieriesMade of polyester,polypropylene,acrilic,PPS,fiberglass,PTFE,P84, ... filter bag sieriesMonofilament filter bag, multifilament filter bag,needle punched filter bag,made of pp,pe,pa(nylon),the ...