KN95 FFP2 Antiviral Mask Individual Package Face Mask Anti Dust Bacterial PM2.5 Protective Masks 99% Filtration Mouth Nose Cover,
KN95 folding dust mask with valve
Filter effect ≥98%, with breather valve, standard number, ultra-high cost-effective style in smoggy weather
For occupational protection of particulate matter, the filtration efficiency for non-oily particulate matter and dust is above 95%
Can't protect: all kinds of gases and vapors, oily particles (such as lampblack, oil mist, asphalt smoke, etc.). It is not recommended for smoke prevention (such as welding smoke or casting smoke).
The protective mask does not produce oxygen and cannot be used in anoxic environment.
Please produce and test the instruction manual. Unique patent design of cold flow exhalation valve is suitable for long-term collocation in humid and hot environment.
Name: Prevention Masks with Breathing Valve