1, resistance to acid and alkali. ? 2, high temperature 200 ℃ for steam sterilization and steam filtration. ? 3, porosity: General metal sintered filter, porosity of 30% or less, while the porosity of PTFE sintered filter up to 50% or more, and therefore the same filtration area, fluid flows. ? 4, outer surface smooth: the outer surface of the filter, such as "wax" system as smooth, so easy to hang in the filter surface impurities, while the outer surface of filters and high precision, low accuracy of the inner filter, filter impurities embedded in the body is not easy, filter core is easy to clean and wash thoroughly, excellent cleaning effect, and then long service life. ? 5, high toughness, strength: high strength and toughness, filter not broken, it is incomparable advantage of the metal filter, completely solve the headache of the filter to let manufacturers "break" the problems caused by huge losses. ? 6, filter precision: 0.1um-0.5um accuracy for high filtration precision and high porosity, high filtration precision of the filter in the case of the working conditions of good fluid flow, which has the practical.