Diffusion: Pretty good particles measuring beneath 0.one micron get bounced close to randomly and are slowed by their interactions with atmospheric atoms and molecules. They sooner or later drift or get bounced right into a filter fiber, whereupon (over again) they adhere in a approach termed diffusion. จัดส่งฟรี! เมื่อสั่งซื้อเครื่องกรองอากาศทุกรุ่น The https://www.mannature.com/products/detail/airpurifier