(1) The anti-haze mask uses air filter material technology, 0.25 micron level, which can prevent virus intrusion. There is also dust-free granular activated carbon in the mask filter. As the traditional activated carbon fiber mask is coated with a layer of carbon powder on the filter fiber, there is a part of fine carbon powder particles in the fiber cloth, which is certain for users with lung diseases. Impact. The refined granular activated carbon can not only deeply purify dust, but also adsorb toxic gases, further improving the safety of the mask.

(2) The most common gauze masks have the worst protection against particulate matter in the air. Ordinary gauze masks are fiber masks, and its flow blocking principle is a mechanical blocking effect. Through this layer of mechanical blocking, large particles can be blocked, but particles less than 5 microns in diameter cannot be blocked.

(3) Medical surgical masks and disposable medical masks can block particles larger than 4 microns in diameter. Tests conducted in a mask-enclosed laboratory in a hospital environment show that according to general medical standards, for 0.3 micron particles, medical surgery The transmission rate of masks is 18.3%, and that of ordinary disposable medical masks is 85.6%, which shows that medical masks have limited barrier effect on fine particles.