National Safety Apparel, located in Cleveland, Ohio, has been a market leader for over 70 years in the design and manufacture of high-quality, U.S.A.-made, personal protective clothing and safety apparel. NSA focuses primarily on industrial applications requiring protection from electric arc, heat & cuts. In October 2004, NSA was registered to ISO 9001:2000, with design, by Smithers Quality Assessments, Inc. of Akron, OH.