Applicable to remove the dust under situation of welding soot, mechanical process, pharmacy, cement and viscosity medium. 1) Imported polyester PTFE coated filter material with high filter precision and small filter aperture 2) Smooth surface with good adhesive performance 3) Excellent performance of resistance to chemical corrosion 4) Galvanized/SS cover and framework 5) Specialized obturator foramen type of flexible neoprene 6) Temperature range: 93°C -135°C 7) Relative humidity: 100% Various specifications of the cartridge and caps are available. We can modify specifications of our products to every specific size to satisfy every customer. We are looking forward to your further information.