ECM offers more than five air-fuel ratio analyzers. Each of its analyzers measures air-fuel ratio using universal exhaust gas oxygen sensors. The company also distributes more than six air-fuel ratio modules suitable for applications where a display is not required. ECM develops, manufactures and sells tools for professional vehicle power train development, calibration and testing. Vehicle manufacturers, engine manufacturers, research institutions and government agencies throughout the world use ECM s tools. ECM, which stands for Engine Control and Monitoring, is located in Sunnyvale, Calif. Along with the United States, the company has regional representatives in the United Kingdom, Germany, Sweden, Japan, Korea, Taiwan, China and India.