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, and we meet all of the record-keeping, security and report-filing requirements as set out by the ATF. We operate under the philosophy of consistently meeting our customers’ requirements and expectations. (less)