Are you looking to buy KN95 Masks with a respirator valve? Our KN95 Mask with Valve is FDA / CE Certified and FDA / CE certified. This mask can protect very well against PM10, PM2.5, and smaller particles. BFE>95% (Bacterial filtration efficiency).
This mask features an Exhalation valve that can be useful in dispersing humidity, heat, and carbon dioxide from the inside of the KN95 respirator facepiece and lower exhalation resistance, thereby making the respirator more comfortable. It also includes a moldable nose bridge and comfortable over the ear straps.