Diffusion: Very Fine particles measuring under 0.1 micron get bounced about randomly and they are slowed by their interactions with atmospheric atoms and molecules. They inevitably drift or get bounced right into a filter fiber, whereupon (yet again) they stick in the approach named diffusion. กิจกรรมเพื่อสาธารณะประโยชน์ของบริษัท The Main 300 also waiting for link from Social Network Posts (19)