Clean room FFU filter membrane products are made through special processes such as biaxial stretching.
The material has a fibrillar microporous structure, the porosity can reach more than 85%, there are 1.4 billion micropores per square centimeter, the pore size ranges from 0.02um to 1.5um, and the filtration accuracy can reach U15 level (99.9995% )~U17 level (99.999995%), which can capture most dust particles so that dust cannot enter the film through the surface of the film.
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