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