China Leak-proof Masks manufacturers Disposable medical mask Specification: FFP2 NR mask,10.5x15.5cm Feature: particle filtering half mask Standard:EN 149:2001+A1:2009 FFP2 NR Material: 58% non-woven symptoms, leave the contaminated area immediately.China Leak-proof Masks manufacturers website:http://www.rongbo-medical.com/....ffp2/leak-proof-mask