| 摘要 |
A mirror-like key ( 40 ) comprises a base portion ( 46 ), a sputtered layer ( 44 ) and a lightproof printed layer ( 42 ) with a light-pervious label ( 422 ). The base portion comprises an upper surface ( 462 ) and a lower surface ( 464 ) opposite to the upper surface. The sputtered layer is formed on one of the upper surface and the lower surface of the base portion. The printed layer is formed below the sputtered layer.
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