The mask must be sealed. There is no hair or beard between the mask and the skin. Make sure the mask is sealed.
The mask must be sealed. There is no hair or beard between the mask and the skin. Make sure the mask is sealed.
(1) wear the mask correctly and use it after passing the inspection. The mask must be sealed, and there is no hair or beard between the mask and the skin, ensuring that the mask is sealed.
(2) the air supply valve shall be firmly adhered to the mouth of the mask
(3) pay attention to the alarm signal sent by the alarm during use, and evacuate the site immediately after hearing the alarm signal.
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