Invention Grant
US09076093B2 Metal card and manufacturing method thereof 有权
金属卡及其制造方法

Metal card and manufacturing method thereof
Abstract:
Provided is a metal card including a metal card sheet made of duralumin and an anodized layer formed by anodizing a surface of the metal card sheet, wherein a background color or pattern of the metal card is determined according to a composition of electrolyte of the anodizing for forming the anodized layer.
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