The instructions for use about ZN6005  

The model of the respiratory authorized by EUA: ZN6005.
Intended use: The respirator is used for respiratory protection of certain non-oily particles; Such as dust, droplets, etc. The product meets the standard: GB2626-2006 (KN95) .
Use Instructions

1. Hold the outside of the mask, then put the mask in your hand with the nose piece at your fingertips.
2. Position the mask under your chin with the nose piece up.
3. The left hand to hold the mask body with the right ear loop hanging on the right ear. The right hand to hold the mask body with the left ear loop hanging on the left ear.
4. Place the fingertips from both hands at the top of the nose piece. Mould the nose piece to the shape of your nose.
5. Cover the front of the mask with both hands, sharply exhale and inhale, if air leaks around the nose, readjust the nose clip as described in Step4, if air leaks at the mask edges, work the straps back along the side of the head to eliminate leakage.
Repeat the procedure until the mask fits properly.
 
Note: Do not wear with beards of other facial hair that may inhibit contact between the face and the edge of the mask. Any leaks between the mask and your face can significantly decrease the protective effect of a fitting mask.