KF80 masks can also prevent part of the virus, masks are used to prevent the virus droplet transmission path, KF80 masks are produced in Korea, using Korean standards of an anti-haze, anti-dust masks, protection level is lower than KF94. KF is the Korean inspection standard, KN is the Chinese inspection standard, KF94 masks are equivalent to China’s KN95 protection standard, in other words KF80 masks In other words, the protection standard of KF80 mask is lower than that of KN95 mask. However, for the general public who are not in the infected area and do not need to contact the infected person, the protection effect of disposable medical masks can be used, and there is no need to pursue KF80 or KF94 or N95 masks.