Clive's mask is regular. Whether it meets the medical-grade standards formulated by the state, it will block, filter and waterproof small particles of impurities and pathogens such as bacteria and viruses.
Introduction:
N95 mask is one of nine kinds of particulate matter protective masks certified by NIOSH (National Institute of Occupational Safety and Health).
N95 is not a specific product name. As long as it meets the N95 standard and has passed the NIOSH evaluation, it can be called N95 mask with an aerodynamic diameter of 0.075? m 0.020？ The filtration efficiency of M particles is above 95%.
During the period of 1992, when Cai, a Chinese-American scientist, taught at the University of Tennessee, the leading team developed a material with positive and negative charges, which can absorb 95% of dust, bacteria and viruses and polarize them before passing through the mask.
This key material was soon used to make disposable N95 masks for personal use. 1996, the US Centers for Disease Control found that N95 masks can also adsorb and block viruses. From 65438 to 0995, the technology developed by Cai was patented in the United States.