![Authorized Chinese Government Factory](https://images-na.ssl-images-amazon.com/images/G/01/x-locale/common/grey-pixel.gif)
The Chinese Government distinguishes masks from medical and non-medical products.
When exporting from China to Japan, the exporting viruses and other information are written in the form of exportion.
It is very difficult and time consuming.
If a virus is noted, medical and the Chinese government.
Therefore, even with 99% of BFE, you can see the "viruses" and "bacteria" on the market!
If you do not have any problems with exportion.
Thats why we do not describe it.