WKS-1010

How to detect a qualified mask according to the standard of each country

Mask standard: N95 is produced according to American standards; FFP2 is according to European standard EN149; KN95 is the Chinese standard GB2626-2006 / 2019; All masks are qualified as long as they bear the N95, FFP2, KN95 remark. The protection level is expressed by the following formula, which is easier to understand: FFP3＞FFP2=N95=KN95＞KN90 In addition, medical surgical masks must be pro...