Also face mask are to passed through the testing of the U.S-based Nelson laboratory with Bacterial Filtration Efficiency (BFE) >98% and have synthetic Blood Penetration Resistance which are up to the standards of medical wear.
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Mar 24, 2020· If you have symptoms of COVID-19, stay at home except to receive medical care.If you live with others or are visiting a healthcare provider, wear a surgical mask if …