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1. People with difficulty in the heart or respiratory system (such as asthma emphysema)2. Pregnancy3. After wearing dizziness, difficulty breathing and skin sensitivity
发布时间: 2017 - 07 - 06
From the physiological structure of the human point of view, because the human nasal mucosa blood circulation is very strong, the nasal cavity is very twists and turns, nose hair from a filter barrier "When the air sucked into the nostrils, the air in the twists and turns in the channel to form a vortex So that the airflow inhaled into the nasal cavity to be heated.It was tested that the cold air at minus 7 ℃ through the nasal inhalation of the lungs, the air has been heated to 28.8 ℃, which is very close to the human body temperature. Masks, will make the nasal mucosa become fragile, los...
发布时间: 2017 - 07 - 06
Flat mask specificationsFlat mask is divided into: 2 layers of non-woven masks, three non-woven mask, four activated carbon masks.Size specifications: 18 9 adults) 15 9 children)Flat mask raw material2 layers of masks: non-woven, nose ribs, ear hanging.3 layers of masks: non-woven fabrics, nose ribs, ear hanging, filter paper.Activated carbon masks: non-woven fabrics, nose tendons, ear hanging, filter paper, activated carbon filter paper.Classification of masksThere are many ways, usually I according to its structure and working principle, divided into two categories: air filter masks and gas ...
发布时间: 2017 - 07 - 06
First, the mask of the dust barrier efficiency. The barrier efficiency of the mask is based on its resistance to fine dust, especially for respiratory dust below 5 microns. Because the diameter of the dust can be directly into the alveolar, the greatest impact on human health. General gauze masks, the principle of its resistance is mechanical filter, that is, when the dust hit the gauze, after - layers of the barrier, some large particles of dust in the sand cloth. But for some fine dust, especially less than 5 microns of dust, will be from the gauze in the mesh through, into the respiratory s...
发布时间: 2017 - 07 - 06
In the family, the bowl, chopsticks, dish, cup, spoon and other cooking utensils using boiling to disinfect is the most simple and very reliable disinfection method. However, note that the use of boiling disinfection method for disinfection, the water must be covered with dietary utensils, and other food utensils are best placed upright rather than stacked, so that the water can touch the various parts, to achieve complete disinfection.In the boiling time, be sure to keep boiling after boiling to continue to boil for more than 5 minutes, if suspected hepatitis virus and other strong resistance...
发布时间: 2017 - 07 - 06
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