- Fine quality electroplating in gold, rhodium, palladium and silver. Professional Plating is a contract electroplating company. We electroplate your stamped, diecast, fabricated and machined components. Professional Plating provides gold plating, rhodium plating, palladium plating, tin plating, silver plating, and tin/lead plating. Our work is controlled by ISO 9000 quality standards.proplate.com