Photocatalyst filter (photoregenerative filter) is a photocatalytic material deposited on the substrate of the filter, which is generally used in combination with activated carbon. Activated carbon through the surface of rich pores adsorption in the air aldehydes, benzene, nitrogen oxides and other toxic gases and a variety of odor, odor. Photocatalyst is an optical semiconductor material with photocatalytic function represented by nano-sized titanium dioxide. Rinse electrostatic filter screen, antibacterial deodorant filter screen with clean water, do not scrub, this will damage the filter screen, and then dry in the cool place (do not bask in the sun, easy to deformation); Clean the electronic dust collector with neutral detergent first, rinse thoroughly with clean water after 30 minutes, and dry thoroughly in a cool and dry place (more than 12 hours). Nano silver has broad spectrum of strong antibacterial, deodorization, anti-static and conductive functions, including bacteria, fungi, trichomonas, mycoplasma and other harmful bacteria have a good inhibition or killing effect, drug resistant bacteria have the same killing force; The product is safe, environmentally friendly and has an antibacterial rate of 99.9%. It is widely used in air conditioners, air purifiers and hospitals.