face mask respirator with vavle 1)with CE EN 149:2001 ... size*Exhalation valve has the uniderection exhalation function of "only out not in",for breathing easy and eliminate the exhaust gas ... Various mask can be supply,including face mask,Anti-Flu mask,disposable mask,non-woven face mask,particulate resirator.**Quality control.A ... Europe,Japan and so on. 3-ply non-woven CE face mask respirator with vavle