... surfaces, internal,external house, public places. Nano Self-Cleaning and Anti-Bacteria CoatingIt use for plastic, metal,wall tiles ... the besmirch, killing the bacteria, preventing the mildew and skin hypersusceptibility, anti-ultraviolet, radiation protection.(Fluorescent,Photocatalyst). ... plastic Lamp, Plastic fan, wall tiles,board and etc(Photocatalyst) Nano Self-Cleaning and Anti-Bacteria Coating