Diffusion: Really fine particles measuring under 0.one micron get bounced close to randomly and they are slowed by their interactions with atmospheric atoms and molecules. They finally drift or get bounced right into a filter fiber, whereupon (once more) they stick in the process known as diffusion. ฝุ่นละออง, เชื้อรา, ละอองเกสร https://mannatureairpurifier.com/