Students in elementary and middle schools in most parts of Canada have started to go to school. This...
As the new crown pneumonia epidemic continues to spread, masks have become a mandatory public health...
The medical standard protective masks have a life span, and the masks are dedicated for special use ...
Medical standard protective masks cannot be cleaned. Spraying disinfectants, including medical alcoh...
Hold the protective mask with one hand, with the nose clip side facing away. Cover the nose, mouth ...
Masks are currently considered to be one of the effective tools to prevent the spread of influenza v...