Diffusion: Quite high-quality particles measuring underneath 0.one micron get bounced all around randomly and so 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 adhere in the approach referred to as diffusion. ฝุ่นละออง, เชื้อรา, https://www.mannature.com/products/detail/airpurifier