one of the highest crimes has been the failure to provide mask info of any real kind, now The CDC Just Released New Face Mask Guidelines https://www.yahoo.com/lifestyle/cdc-...161700290.html
good luck with that...
NIOSH-Approved Particulate Filtering Facepiece Respirators https://www.cdc.gov/niosh/npptl/topi...t/default.html
Standard Specification for Barrier Face Coverings https://www.astm.org/f3502-21.html
good luck with that...
NIOSH-Approved Particulate Filtering Facepiece Respirators https://www.cdc.gov/niosh/npptl/topi...t/default.html
Standard Specification for Barrier Face Coverings https://www.astm.org/f3502-21.html
Comment