TDK is a famous electronic industry brand, has been in the electronic raw materials and components occupy the leading position.TDK"s founder, Kato, and Dr. Takei Takeryo and Dr. invented the ferrite in Tokyo., in 1935 founded the Tokyo Dengikagaku Kogyo K.K, Tokyo University of electrochemical system is the predecessor of the name, Kato and Dr. Takei Take and Dr., at the University of the Department of electrochemistry taught.In 1983, the name was officially changed to TDK company now, take the original name Denki Kagaku Tokyo's first letter, began to engage in the business development and operation of the magnetic material.