About


Founded nearly 70 years ago by Mr. Tetsuo Atsumi, today Atsumitec Co. Ltd. is a comprehensive leader of change-control systems, with global operations in ten locations spanning eight countries. Headquarted in Hamamatsu, Atsumitec designs, engineers and produces a wide array of lightweight, functional, compact, close-tolerance parts for automobile, motorcycle and other general-purpose use.  With a corporate philosophy to “create new value for our customers with a positive contribution to society”, Atsumitec is committed to responding to the needs of customers worldwide in a timely manner and always with a global perspective.

As Hideyuki Suzuki, President and Director of Atsumitec states, “The automotive industry is entering a major transformation period, and is requiring vehicles to be made safer and more friendly to the global environment. Blending diverse technology, cultivated over the years, with advanced ideas, our company will proactively research & develop Environmental Technology that can respond to the safe usage of Next Generation Energy, and in this way, we hope to contribute to society.”

Ada Technologies, a world-class producer of high-quality, precision change control systems for major global automotive manufacturers, such as Honda, Nissan and JATCO, is proud to be part of the Atsumitec family.