Bestway n95 mask is still good.

N95 mask is one of nine kinds of particulate matter protective masks certified by NIOSH. N95 is not a specific product name. As long as it meets the N95 standard and has passed the NIOSH review, it can be called N95 mask, which can be used for aerodynamic diameter of .75? m±.2? The filtration efficiency of m particles is above 95%.

Bestway is a brand registered in China Trademark Office on November 14th, 217; Provide medical thermometers; Surgical gown, mask, nipple for bottle, condom, support bandage, elastic bandage, hanging bandage, stockings for varicose veins, suture material, plaster bandage for orthopedic. The N95 mask produced by Bestway is relatively reliable in quality and can be used as a medical mask to meet some daily protection needs.

Performance limitations of p>N95 mask:

1. Respiratory infectious diseases are not only transmitted through respiratory tract.

2. Preventive measures should precede exposure.

3. The tight structure and efficient filtration of the mask will increase the respiratory resistance and reduce the comfort.

4. If the mask design is not suitable for the user's face shape, it will affect the fit and cause leakage.

5. The protective mask can effectively reduce the concentration of harmful substances by 9% under the condition of meeting the requirements of suitability and correct use.

6. The government has not established a safe exposure limit for pathogenic microorganisms. Respiratory protection can only reduce the risk of illness, but it cannot eliminate the risk.