Which is better for family hotels to use the new national standard?

Method of removing dust: The protective effect of gas mask depends on two aspects. The first is the protection level of the filter box. The second is the tightness of the mask and the face.

Therefore, masks must be divided into different sizes, and the fitting effect of masks with different sizes and different faces varies from person to person.

Methods of cleaning dust: Scientific selection of gas masks certified by GB2890-2009 is helpful to prevent harmful gas injuries.

1, select the composite half mask type.

2, choose the corresponding level of filter box to use. Low protection rate will lead to physical injury.

3, the choice of silicone material is more comfortable. Suitable for long-term wear, not easy to cause allergic reactions. A mask with high hardness is easy to cause facial depression.

4, mask size, this is extremely important. Don't buy those so-called universal masks. Easy to leak.

5, the mask has a full-face film and a semi-face film. Among them, the most commonly used semi-mask covers the nose and mouth, covering the nose and mouth and mandible. Suggest using the latter, which is relatively comfortable.

6. It is recommended to choose a mask with smooth breathing. Some use double filter box design, breathing more smoothly.