Nutaimembrain - 29 Photos - Health/Beauty- ความคิดเห็นหน้ากากกรอง hepa อิเล็กทรอนิกส์ 2 ,It's the most important thing in the air filter. Our filter can filter anything. It's here, e.g. A. If filter just dust, Hepa sheet, the resolution should be smaller than PM10, it may not reach PM2. 5 (10 micron >Hepa> 2.5 micron) b. b If you want to filter PM2. 5 with Hepa sheet, it should be smaller than PM2. 5 (2.5 micron >Hepa> 0.1 micron) c.

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