We supply Kn95 Disposable Mask you may buy a few or in bulk. KN95 mask is a regulated mask by the Chinese government under regulation GB2626-2006 Which is rated to filter at least 95% of particles with mass median diameter of 0.3 microns or larger. Kn95 mask are authorized by the FDA as suitable for use under certain circumstances which would pertain to the Covid-19 pandemic. They are not 100% guaranteed to protect you from the virus but they are suitable for use as a potential help when worn properly. These mask are not for medical use. Each Country have their own certification standards. Check the FDA website for more information concerning mask certifications.