Efficiency of dust
Masks the dust efficiency of high and low is the fine dust, especially for micro 2.5 meters below the dust efficiency as standard. Because the particle size of dust can directly into the alveoli, the effects on the human body health is the largest. Gauze masks and the principle of dust is mechanical filter, which is when the dust into the gauze, after - layer upon layer of blocks, will be cut off some of the large particles of dust in the sand cloth. For some fine dust, especially of less than 2.5 micrometers dust, will wear in the past, from the gauze mesh into the respiratory system. Dust mask, the filter material of activated carbon fiber felt pad or non-woven fabric, the smaller than 2.5 microns of dust through the process of this kind of filter material.
Or degree
Masks anti sliding sideways design is to prevent the air through the masks and human facial aperture and not by filtering drawn into consideration requirements of technology. Is like water, air resistance is small just where to flow. When the shape and the face mask is not closed, as will never closed in danger in the air leak into, enter the human respiratory tract. So, even if you choose filter material again good mask. Can protect your health. Standard abroad many rules and regulations, the worker should mask seal test on a regular basis. The purpose is to ensure that workers use less appropriate respirator and in the correct steps to wear masks.
Wear comfortable
Working talent will be happy to stick to wear in the workplace and to improve the work efficiency. Foreign maintenance-free type of face mask, now don't have to clean or replace parts, after saturated or dust masks worn or discarded, that is to ensure that the mask health and was relieved from the maintenance workers face mask of time and effort. And many masks are using arched shape, can guarantee and the face shape and good and can be in the mouth and nose to retain a certain space, comfortable to wear.
Discomfort in the crowd
Have difficulty in the heart or respiratory system (such as asthma, emphysema), dizziness, difficulty breathing after pregnancy, wear and sensitive skin.