CDC网站上解释了多种非NIOSH口罩2020-03-16 01:58ccatfish5272020-03-16 01:58https://www.cdc.gov/niosh/npptl/usernotices/counterfeitResp.htmlCounterfeit Respirators / Misrepresentation of NIOSH-Approval原来有各类造假行为,比如Yark 套用3M 8210还有使用过期认证的