Below is a list of Gold Plating manufacturers from Billerica, Massachusetts. Gold plating involves the deposition of a thin layer of gold onto another substrate, typically a variety of metal parts. Able to be achieved through either chemical or electrochemical means, there are numerous types of gold plating processes, and they utilize four major classes of chemistries: alkaline gold cyanide, neutral gold cyanide, acid gold plating and non-cyanide sulfur-based solutions.