... Valve Face Mask 1,non-woven disposable anti-dust face mask,cup style; 2,EN149:2001,FFP2 standard. Cup Active Carbon Valve Face Mask 1 ... flat, ES purifying, active carbon, solid, cup, valve, spongePacking20pcs/box, 16boxes/ctncertificateNELSON LAB, BFE>99%, CE ... woven face mask, cleanroom wiper, cleanroom paper (SMT), antistatic garment, antistatic gloves, antistatic shoes and sticky dust series. ...