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Due to its excellent conformability, high conductivity and shielding effectiveness, copper foil has found a multitude of uses in the electrical/ electronic fields.  In comparison to aluminium foil, copper foil does provide greater shielding effectiveness than aluminium of the same thickness and is particularly more effective in the higher frequencies (+10 kHz). Copper foil can be readily soldered and this makes it ideal for the easy attachment of an earthing connector onto the metal shield. Unfortunately copper does tend to oxidise in "normal" environments as a result it should ideally be protected to maintain it in a quality condition.

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