I didn't know you could chrome straight over old chrome ?
Not sure if anyone does but you wouldn't want to. Chrome is porous and if you chrome steel without the copper plating it'll start to rust quickly.
All previous plating has to be stripped then it gets polished and some places don't strip or polish, you get it to them already prepped.
Once stripped and polished the polish should be inspected before dipping in the baths and then inspected afterwards. If the first plating is not good it needs to be stripped back again in a caustic bath.
After the copper plating is done, it has to be inspected, polished and then into the next tank for nickel plating. The nickel plating has to be as good as the copper plating.
The chrome is then the third plating = triple plated.
Not many places will go to these lengths.
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