For over 80 years, Keystone Corporation has been specializing in the metal finishing industry. Based in Buffalo, N.Y., the company offers metal finishing and metal plating surfaces. Its metal finishing service meets the requirements of commercial, corporate and military specification. The firm has one of the largest electroless nickel-plating installation in the United States. It offers various services, such as metal plating, electronic plating, stainless steel treatment, surface treatment, aluminum conversion coating and finishing services. Other services include phosphate coating, passivation, pickling, electro polishing, abrasive finishing and cleaning for oxygen service.