Diffusion: Extremely Wonderful particles measuring beneath 0.one micron get bounced close to randomly and so are slowed by their interactions with atmospheric atoms and molecules. They finally drift or get bounced right into a filter fiber, whereupon (over again) they adhere inside a process termed diffusion. กิจกรรมเพื่อสาธารณะประโยชน์ของบริษัท The Main three Successfully Submitted (Awaiting Approval)