its nearly official, page-11

There are other filters more widely recognised than the AFT system.

http://www.vnagency.com.vn/NewsA.asp?LANGUAGE_ID=2&CATEGORY_ID=33&NEWS_ID=171248

AFT trialed it's system in China and it failed to impress the government officials.

Hepa filters have been around for years and are used in Chinese hospitals and subways.
Filters are not considered highly effective against the transmition of flu like viruses, because the virus can spread in many ways.

AFT had a big run during the SARS scare, and have done nothing since.
The technology sounds good, but I doubt if they will ever be case flow positive.