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By certification 
United States standard — NIOSH N95: filters at least 95% of airborne particles, not resistant to oil.
Europe standard — EN 149: 2001 + A1: 2009
| Class | Filter penetration limit (at 95 L/min air flow) | Inward leakage |
| FFP1 | Filters at least 80% of airborne particles | <22% |
| FFP2 | Filters at least 80% of airborne particles | <8% |
| FFP3 | Filters at least 99% of airborne particles | <2% |
Product features:
Material:Non woven fabric, PP,MB
4 ply
Style:Ear-loop
Packing:50pcs/box, 1000pcs/ctn
Cup Shape Without Exhalation Value
Application:
Air Pollution
Dust
Polishing and grinding
Renovation
Factory
Building Site
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