Sansha Electric Manufacturing Co. (Ltd.), Japan Corporation, has been more than 70 years old since its establishment in the past three years. As a leader in mechanical and electrical technology, we continue to develop new technologies, introduce new products, and make contribution to the world's industry with SanRex brand. The company since 1933 with power arc projector development since, after long-term efforts, now has become a power semiconductor device and the power of professional manufacturers, played a leading role for the development of the industry. In 1962, the product of SCR was realized. With the development of power transistors, IGBT and power electronic products, all kinds of power components were developed. In addition, the industrial power supply equipment for such semiconductor component applications has been provided to all walks of life, and the excellent product performance has also been highly appraised by foreign users.