| 摘要 |
Copper for a print circuit has a nickel layer with a phosphorus or a copper layer. Metals having layers of thin copper, nickel, tin cobalt and Cu-Zn alloy cannot be easily etched by the hyper-sulfuric ammonium solution that is typically used. To solve this problem, thin copper for a print circuit has a nickel layer containing formed phosphorous on the attached copper layer. The manufactureing method uses plating through a nickel plate bath, then the metal is washed and dried.
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