Nano Self-Cleaning and Anti-Bacteria Coating for plastic, 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 ... , removing the peculiar smell, degrading the besmirch, killing the bacteria, preventing the mildew and skin hypersusceptibility, anti-ultraviolet, radiation ...