Operational for more than 30 years, Surtronics specializes in metal finishing. The company has expertise in finishing a wide variety of metals, such as gold, silver, tin, copper, zinc, cadmium, solder, electroless nickel and chrome. Additionally, it specializes in passivation and electro polishing of stainless steel and automated plating of copper, nickel, chrome and zinc. The company offers various other finishes, including anodizing conventional and hard coat and chromate conversion coating of aluminum. Its zinc can be dyed in various colors, such as blue, green, red, yellow and black finishes. Surtronics serves various industries that include medical, automotive, telecommunications, industrial, aerospace and defense. The company is located in Raleigh, N.C.