Other Filtration Equipment & PartsChina Hydrophobic PTFE Pes 10/20/30/40 Inch 0.1 Microns Pleated Membrane Air Filter Cartridge for Gas Air Filtration System, Find details about China PP Micron Pleated Filter, Microporous Folded Filter Cartridge from Hydrophobic PTFE Pes 10/20/30/40 Inch 0.1 Microns Pleated Membrane Air Filter Cartridge for Gas Air Filtration System