On May 1, 1999, Siemens semiconductor officially changed its name to Infineon, with its headquarters in Munich, Germany. It mainly produces automotive and industrial electronic chips, security and IC card application IC, communication multimedia chips, memory devices, etc. Infineon was one of the top ten semiconductor manufacturers in the world in 1998. The company has 10 manufacturing plants in five countries in Asia, Europe and the United States, 16 R & D centers in nine countries, and about 25000 employees in 1998. Its main partners are Motorola, IBM, Mosel vitelic, etc.