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Color development technology for metal without paint

Technology:

Light reflection layer on the surface of metal and the effect of the reflected interference of light on the outside surface of the light transmission layer which has nanohole formed by anodized treatment process makes the colors coming out beautifully. Thickness variation of light transmission layer makes various colors coming out. Blooming the surface of metal with Carbon in the final manufacturing process increases the contrast. Explanation of cutaway drawing 10 anode oxide coating 11 light reflection layer 11a surface of metal 12 nanohole 13 light transmission layer 13a outside surface 14 light absorbing layer

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