Breathing valve mask is designed for people's health to prevent visible or invisible substances harmful to human body from filtering, so as not to bring adverse effects to human body.
function
In a hot and humid working environment with poor ventilation or heavy workload, using a mask with a breathing valve can help you feel more comfortable when exhaling. Breathing valve mask is a one-way valve. Exhaled gas can expel gas. Because there is no filter layer in the exhaust process, if the patient wears this mask, the virus may be discharged. Confirm or suspect that this mask is not suitable for wearing.
principle
When exhaling, the valve plate is blown open by the positive pressure of the exhausted gas, so that the exhaust gas in the body can be quickly eliminated, and the sultry feeling when using the mask can be reduced; when inhaling, the negative pressure will automatically close the valve to avoid inhaling pollutants from the external environment.
Top ten mask brands in China: Steady, Green Shield, Yunnan Baiyao, Baoweikang POWECOM, Foucault, Heino, Chaomei, Taienkang, Yangpu Improvement and Jiahu.
Steady: Steady mask has always been a very famous mask brand in China. Especially after this epidemic, everyone was more impressed with this brand, because even when the epidemic broke out, this brand still insisted on production, which solved the problem of mask shortage for everyone.
Green shield: As one of the three major mask brands in China, the quality of green shield mask is very good. Established early, it has developed a new generation of antibacterial and dustproof masks. At present, it has been authorized by the national patent, and the reputation of PM2.5 mask is very good. At present, there are two kinds of green shield masks for adults and children, which can protect the health of family members in all directions.
Yunnan Baiyao: When you hear about Yunnan Baiyao, your first reaction may be Yunnan Baiyao aerosol, but in fact, Yunnan Baiyao is an old brand in China, focusing on the research and production of Chinese herbal medicine products, with a development history of 100 years. The mask quality of Yunnan Baiyao is also very good, and the price is relatively civilian, which is favored by many consumers.