Cleaning Plated Electrical Contacts?
The original Caig Cramolin (red) works well on tin and nickel surfaces.
ProGold does a fairly good job on gold surfaces. Go to the Caig site and see
what you think. Try not to be too alarmed at the high prices. (These are
"professional" (not consumer) products, and Caig gouges.)
There are probably other effective products out there.
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