MDE International, Inc. is headquartered in Burton, Michigan with environmental test sites located throughout the United Stat ... es. In addition to the testing we perform at our corporate headquarters, we operate year round test facilities in Bemidji, MN; Corpus Christi, TX; Denver, CO; and Las Vegas, NV. Our strategic business alliances allow us to test, evaluate, and manage vehicles virtually anywhere, worldwide. We don't just collect and report information, we provide solutions. . read more