Chinese standard : YY/T 0969—2013
we have all kinds of the masks KN95,N95,FFP2,FFP3 masks, medical or non-medical mask,
if you want to buy ,please contact us,
Chinese standard : YY/T 0969—2013
we have all kinds of the masks KN95,N95,FFP2,FFP3 masks, medical or non-medical mask,
if you want to buy ,please contact us,