เครื่องกรองอากาศ ขนาดเล็ก Secrets
Diffusion: Very wonderful particles measuring beneath 0.1 micron get bounced all around randomly and they are slowed by their interactions with atmospheric atoms and molecules. They eventually drift or get bounced into a filter fiber, whereupon (over again) they adhere inside of a method named diffusion.The lamp might be shut off at other supporter