| 摘要 |
A roughening-treated copper foil, comprising (A) a copper foil, (B) a composite metal layer, which is formed on a bonding surface of the copper foil and comprises (I) copper, (II) at least one metal selected from the group consisting of tungsten and molybdenum and (III) at least one metal selected from the group consisting of nickel, cobalt, iron and zinc, and (C) a roughened layer comprising copper, which is formed on the composite metal layer.
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