Sink Chrome

How do I remove the stain shaped chrome sink plug?
the strainer / stopper in the sink was stained and faded form bright chrome with a brown mess. have tried to immerse themselves in a brown sauce as it does with the cash, but to no avail. Do not use abrasives.
They make a cleaning spray that you use Chrome at work. It's amazing. You should be able to find in any department store or store the car …