Photo Catalyst Tio2 FDA approved, government agencies like NASA, EPA, Swine flu, Tio-2 uses light to create mechanical oxidation know as hydroxyl radical to decompose germs, unwanted organic compound like VOC, odor, formaldehyde, Co2, Microbial, Hydroxyl radical will never be depleted. Self-clean is achieved only when the Tio2 film forms a super -hydrophilicity phenomenon, eating Grimes, can be washed off with water or rain. Dr. Fujishima effect. d industrial smog, volatile organic compounds found in various building materials and furniture, or...