Diffusion: Extremely Fantastic particles measuring underneath 0.1 micron get bounced about randomly and therefore are slowed by their interactions with atmospheric atoms and molecules. They ultimately drift or get bounced right into a filter fiber, whereupon (once more) they adhere in a very process identified as diffusion. จัดส่งฟรี! เมื่อสั่งซื้อเครื่องกรองอากาศทุกรุ่น The Successfully Submitted (Awaiting Approval)