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Choosing N95 masks is very effective in preventing smog and dust

Speaking of N95 masks for preventing smog and dust, let us first understand smog and PM2.5. Does smog=PM2.5? The main compone

2021-08-20

Wearing a mask can help reduce contact with polluted air

According to general practitioners in the United States, it has been medically confirmed that small particles smaller than 2.

2021-08-20

Correctly use the method of wearing disposable sanitary masks!

Correct use of disposable sanitary masks:How to wear a mask1. The mask has two sides, white and blue, with the white side fac

2021-08-20

The secret of mask health lecture hall!

Masks generally refer to appliances worn on the mouth and nose to filter the air in the entrance and exit nose to prevent har

2021-08-20
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