limitation on usage and alarm
1.Before using this protective mask, wearers shall accept trainings about how to use the mask correctly and conduct the compatibility test.
2.When the concentrate of pollutants reaches a certain degree which would immediately affect the people's life or health, this protective mask shall not be used.
3.When being difficult to breath, dizzy or in other uncomfortable cases, leave the pollution area immediately.
4.Replace with a new mask if the protective mask is damaged or the respiratory resistance turns over high.
5.Every time before use, check the protective mask to ensure it is under good working state. Check all parts of the mask if any damage, including two ear belts, nose clip and aspirating valve.
6.This protective mask shall not be refitted, cleaned, abused or misused.
7.This protective mask shall not be used if the face can't have good sealing with mask edge due to beard, facial hair or other facial features.
8.It shall be used according to applicable regulations specified by the government.
9.The effectiveness of protective mask may be reduced, or disease or permanent injury may happen if relevant operating manual or warnings for wearing the mask is not followed during the usage, and/or the entire wearing process is exposed under pollution.