out. I have not personally used any of their products, but they do sell some chrome plating kits. They advertise their Plug N' Plate kits for chrome touchup.
Some people on rec.crafts.metalworking mentioned them a few years ago, and I don't recall anyone complaining at that time.
I actually got one of their kits to put a black coating on some steel, but as usual, I never got around to it so I can't say if it worked or not.