... release negative oxide ion, and purify the air.2) Sterilizinganti-virus, anti-mildew: kill all kinds ... )the insultant is green environment protection too.2)high-tech and strong power supporting(Low- ... government.D)have invented the smallest photocatalyst particle as 2-3 nanometers in the world in Sep,2005 ... and anti-pollution of outer wall decoration, such as coating, ceramic, and curtain wall glass ect ...