On March 17, 2020, the U.S. Centers for Disease Control and Prevention (CDC) released “Optimizing N95 Mask Supply Strategies: Crisis/Alternative Strategies”, pointing out that during the COVID-19 epidemic, when N95 masks When the supply of masks is insufficient, masks produced according to the standards in the table below are suitable substitutes for N95 masks. These include masks produced using Chinese standards GB2626-2006 and GB/T18664-2002. See the table below for details:
For more details, see: https://www.cdc.gov/coronavirus/2019-ncov/hcp/respirators-strategy/crisis-alternate-strategies.html
