For over 70 years, Williamson Polishing & Plating Co. Inc. has been providing a full range of polishing and plating solutions to its clients. It offers finishing in a variety of metal, such as brass, copper, silver, cadmium, hard/decorative chrome, black oxide, tin, nickel and more. The firm utilizes a variety of combined chrome and nickel tanks for its production. In addition, it also provides statewide trucking services to its clients. Based in Indianapolis, Ind., Williamson Polishing & Plating Co. Inc. caters to clients throughout the United States. The firm is certified by the Federal Aviation Administration (FAA).