1- Open the folding mask, with one side of the bridge of the nose facing up. 2- The mask along the bridge of the nose, complete coverage of the mouth and nose. 3- Buckle the ear strap behind the ear and adjust the ear strap to a comfortable position. 4- Adjust the bridge of the nose strip to the patch, and make sure the mask completely covers the nose and chin. 5- Make sure the mask is adequately pressed and sealed.
Warning: 1- Please do not continue to use the inner and outer packing boxes if they are seriously damaged. 2- Do not reuse, discarded masks should be treated as medical waste, do not discard. 3- Store in room temperature relative temperature <or= 80%, cool dry, well ventilated indoor.