With the development of our country, although our country has started environmental protection projects, there will still be car exhaust, dust in the air, or other viruses and particles on the streets of cities, all of which will have an impact on human health. , so some people choose to wear masks when they go out for shopping.
There are also some places where you must wear a mask to work, that is, some mining industries, flour, lime cement and other dust-rich enterprises, work in these places must wear masks, because if they do not wear masks, these workers may get pneumoconiosis or other respiratory diseases.
Disposable dust masks need to be used within the expiration date after opening the package, and disposable masks are disposable items, they are destroyed after use and cannot be reused. Check the packaging before use. If the packaging is damaged, do not use it. Note the production date on the packaging.
