https://www.3m.com/3M/en_US/p/c/filtration-separation/filter-cartridges-media/pleated-membrane/i/electronics/semiconductor/
3M Pleated Membrane Cartridges for Semiconductor | 3M United States
Single surface and graded depth filtration cartridges which employ pleating technology to increase the surface area available to catch filtered contaminants.
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https://www.hongtekfiltration.com/index.php/Content/Pagedis/lists/id/1073/catid/333/hcatid/1073.html
High Flow Filter Cartridges, Water Filter Cartridges & Housings, Ultrafiltration, MBR & RO Membrane...
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