... Ranges 3,Even Pore Size Provides High Filtration FMS laminer air flow \PTFE MembraneProduct Name FMS\PTFE Membrane FiltrationFiber Fiberglass , Organic ... Bag Where to use? Applications:PTFE staple fiber is used to make PTFE needle felt and PTFE spunlace felt.PTFE ... filtration efficiency and long life time.Dust filter bags widely used in cement plant, power plant, steel industry, chemical industry, ...