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By certification 
Product Features:
KN95 level protection, filtering efficiency up to 95%, the production of our disposable KN95 face mask strictly follows GB2626-2006 (China's KN95 standard). 5 Layer KN95 mask material：2*Non-woven fabric, 2*melt-blown fabric, 1*heat-seal cotton
Comfortable to wear,high-quality elastic earband makes it quite easy to wear and comfortable for long periods of wearing.
Structural layer builds a 3D space for non-contacts between your mouth and the respirator. The inner layer with soft materials contacts your face for comfortable using experience.
Points for Attention:
1. This product is prohibited to be used with damaged package.
2. Do not use in atmospheres containing less than 19.5% oxygen, as this respirator does not supply oxygen.
3. If the product becomes damaged, soiled, or breathing becomes difficult, leave the contaminated area immediately and replace the product.
4. This product is one-time use only and can not be washed.
5. This product should be stored in a clean, dry and ventilated environment with relative humidity less than 80% and without harmful gas.
http://www.safetymaskshield.com/
