Standards and Certifications:
How to use our masks:
1. Open the mask.
2. The dark color is facing outwards, and the color of the light is facing.
3. place the mask on the face with the bridge of the nose on the top; adjust the top thread to fit the bridge of your nose completely.
4. Elastic ear hanging on one ear.
5. Adjust the size of the mask to completely cover the nose and mouth.