... filter media 3good quality filter media nonwoven filter fabric with PTFE membrane In Jiangsu Hualong, we take pride to be ... kinds of filter material for air filtration, such as PPS, PTFE, P84, nomex filter bag , acrylic, polyester, fiberglass needle ... Sample size:200/50mm)Surface treatment: Heatset, singed, calendered PTFE membraneLongitudinal(N):>1500Transaverse(N):>1700 nonwoven filter fabric with ...