'Chrome', is NOT a 'paint'.
Use NO abraisive on it.
If your 'chrome polish', will remove oxide from aluminium, it IS an abraisive.
Chrome can NOT be 'improved', only degraded.
Clean it with a detergent and cloth. (A light oil, WD-40, etc, is ok)
Protect it. (sealant/wax,etc)
Regards,
J T
(What we need here is a 'sticky', on the 'Care & Feeding of Chromium Plate'!