KN95 Protective mask

KN95 Protective mask protective mask ,

instructions :(1)Stretch unfolded mask .

(2)Wear rubber bands on bothe sides .

(3)Press the bridge of the nose and sides to make it more conformable .

Precautions : （1）it is not recommended to use this product under the condition of low oxygen .

(2)For patients with severe asthma or other severe respiratory diseases ,please use with caution .

(3)Please use the masks properly .

Do not modify or misuse it at will to  avoid serious consequences caused by improper usage .