Silvex Surface Technologies, located in Westbrook, Maine has been providing quality finishes for some of the firearms industries leading manufacturers for over 35 years. Processes: sulfuric anodize, hard anodize, manganese & zinc phosphate, black oxide, nickel, boron electroless nickel, teflon ptfe, gold, passivate, platinum, and silver. process controls: baking for stress relief, x-ray testing for thickness, salt spray testing, coating weight analysis, automatic rotary blasting and parts washers. ISO 9001:2008, AS9100D, and NADCAP Certified. ITAR Registered and Federal Firearms Licensed. (less)