N95 Face Mask

N95 FACE MASK are flat type with or without valve and cup type with or without valve.
The standard for N95 respirators includes, but is not limited to, a filtration of at least 95% under a 0.3 micrometer 200 milligram test load of sodium chloride. Standards and specifications are also subject to change.
KN95 masks reduce the amount of dust or virus particles a person breathes in by approximately 95 percent. A KN95 provides better pro- tection for the wearer than other face masks, while also reducing the spread of the virus from the wearer.
N95 Medical use Mask: N95 respirators must form a seal to the face to work properly. This is especially important for people at increased risk for severe disease. Wearing an N95 respirator can make it harder to breathe. If you have heart or lung problems, talk to your doctor before using an N95 respirator.
N95 masks have a filtration efficiency of at least 95% for NaCl particles 100–300 nm in size. When the certified flow rate is 85 L/min, the filtration efficiency reaches 99.5% or higher at about 750 nm. The removal rate for environmental particles with submicron particles smaller than 750 nm can be up to 100%.