... 3.ISO 9001:2008 100% Acrylic nonwoven needle punched felt 1.Good air permeability needle felt2.Excellent chemical resistance and ... hydrolysis resistance3.Widely used in waste incineration, asphalt,dryer,coal mill and power plant for flue gas dust ... twill,satin construction,any dimension is available. 2.needle felt sieriesMade of polyester,polypropylene,acrilic,PPS,fiberglass,PTFE,P84, ...