Do you have to worry about the metal frames pitting or tarnishing?
Your metal-framed mirrors need to go through a 4-step process to prevent pitting and tarnishing.
Step 1 cleans the metal in a neutralizing water bath. Step 2 treats the metal in a pre-plating nickel bath. Step 3 uses an acid-bath plating method to apply the chrome, gold, or nickel plating. Step 4 finishes the process with an application of an anti-tarnishing lacquer coating.