My bumpers were chromed 8 years ago by a local shop. They sat for years. I took them out of the wrapper and installed them on the car. They were pretty nice... like the day they were chromed still. They were a little wavy though and didn't have quite a mirror finish.

Two years later and they are starting to rust in my humid shop. They shouldn't be rusting. They have a lifetime warranty, and the shop will honor it.

He says they use a double nickel process, not triple plating. I know what triple plating is (copper, nickel, chrome). What is double nickel? I am assuming it isn't as good.