Smoke prevention, fire protection mask, home hotel, new GB, which is good?
Therefore, the mask must be divided into size, size and size of the mask and face fitting effect varies from person to person.The dust of the road: scientific selection after GB2890-2009 certification of gas masks, helps to prevent the harmful gas harm.1, choose double mask type.2, choose the appropriate level of use of cartridge. Low protection will cause physical harm.3, choose silicone material is more comfortable. Suitable for long wear, not easy to cause allergic reactions. A mask with a high hardness can easily cause a facial impression.4, mask size, this is extremely important. Don't buy masks that are commonly known as universal models. Easy leak.
The dust of the road: gas mask and protective effect, depends on 2 aspects. First, the protection level of the filter cartridge. The two is the tightness of the mask combined with the face.
The mask has a full shield and a half face mask. One of the most commonly used semi masks, covering the nose and mouth, covering the mouth, nose and jaw 2 kinds, it is recommended to use the latter, relatively comfortable.6, it is recommended to choose smooth breathing mask. Some use dual cartridge design, relatively smooth breathing.
