Founded in 1941 and located in Cleveland, Ohio we are the largest commercial Black Oxide company in the United States. ISO 9001:2015 Certified, we specialize in Isotropic Super Finishing and Black Oxide processing of steel, stainless steel, copper, brass, bronze, die cast zinc and powdered metal parts. We have a Federal Firearms License (FFL) type 7 license and we meet all of the record keeping, security requirements and report filing as set out by the ATF. We operate under the philosophy of consistently meeting our customers requirements and expectations. (less)