3 ms·
It should be clearly stated that a valve mask is for industrial use only (wood can’t catch Coronavirusis - yet). Non-valued is for use in social settings to cor
by drivingmenuts 6y ago
It should be clearly stated that a valve mask is for industrial use only (wood can’t catch Coronavirusis - yet). Non-valued is for use in social settings to correctly contain exhalation droplets and other effluvia.