With the development of society and the improvement of science and technology, the pollution of the natural environment is becoming more and more serious...

Now everyone should be familiar with disposable masks, especially in public places, special hospital bacteria...

Now disposable masks are more and more common in our daily life. But many users do not know how to clean disposable masks. Let me explain how to clean disposable masks...

Now the hospital is full of people hanging salt water, injured, urine test, the corridor, the air is really not very good...

The dust blocking efficiency of gauze masks is based on their ability to block fine dust, especially respirable dust smaller than 2.5 microns...