... kinds of germs, viruses, resolve mycete effectively.3) Dislodging odoursresolve the organics gas in the air ... particle size distribution of NM Titanium dioxide granule: 2.0-3.0 NM (the smallest of the world ... D)have invented the smallest photocatalyst particle as 2-3 nanometers in the world in Sep,2005. ... , eliminate odour, and then improve the air quality, restrain the disease infection, make sure the ...