Certified by Underwriters Laboratories as a registered ISO 9001 company. Lyon is one of the only companies in its industry to meet the rigorous standards established by the International Organization for Standardization relating to a quality management system. These standards are used to certify a quality management system from initial design and development through production, installation and servicing. ISO registration is recognized throughout the world as a symbol of an organizations commitment to quality. At Lyon, we view ISO as the foundation for achieving quality products and services that will satisfy our customers as well as sustain our dedication to ongoing quality improvement.