Diffusion: Extremely Fantastic particles measuring beneath 0.1 micron get bounced around randomly and therefore are slowed by their interactions with atmospheric atoms and molecules. They sooner or later drift or get bounced into a filter fiber, whereupon (another time) they adhere within a course of action termed diffusion. จัดส่งฟรี! เมื่อสั่งซื้อเครื่องกรองอากาศทุกรุ่น waiting for link from Social Network Posts (8)