This has just been in my experience with chrome trims, so maybe someone has more official knowledge than myself.
Many of the chrome trims that I have seen are a chrome-surfaced plastic and very seldom actual chrome. Some of the Audis have a 'brushed look' trim that is almost a lacquered metal finish.
I had an issue at a dealership I contracted at where there were many Volvos, Jaguars, and BMWs with this trim failure that ended up having to be replaced. They had found this was caused by the harsh chemicals used at the local tunnel wash (PDQ, to be exact) and could not be corrected. You can try an
AIO but it isn't likely to work. We had found on the Audi brushed trim that some aggressive clay made it look a little better, but still not 100%.
Do you have a link to the website for those products? A specific cleaner may possibly be a solution for you.