Masks have a certain filtering effect on the air entering the lungs. When respiratory infections are prevalent, wearing masks has a very good effect when working in a polluted environment such as dust
2020/03/29 admin 13
1.Process of wearing protective items: washing or disinfecting hands → entering clean area → wearing medical protective masks → disposable hats or cloth caps → changing work shoes and socks → wearing
2020/03/29 admin 6
Correctly wearing a mask is an effective means to block the spread of respiratory secretions. Medical masks are equivalent to resisting liquids, filtering particulates and bacteria, and are a kind of
2020/03/29 admin 5