Diffusion: Pretty great particles measuring underneath 0.1 micron get bounced all over 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 (another time) they stick inside a approach called diffusion. จัดส่งฟรี! เมื่อสั่งซื้อเครื่องกรองอากาศทุกรุ่น The Blue https://mannatureairpurifier.com/