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Dr. Shih-Wei Sun is currently UMC's vice chairman. He was previously the company's CEO, and prior to that he served as Chief Operating Officer, accountable for 12-inch operations and business. He joined UMC in 1995 and has been responsible for the operation of UMC Fabs 6A, 8AB, 8D, and 12A, along with Central R&D. Prior to joining UMC, Dr. Sun worked for Motorola in the Advanced Products Research and Development Laboratory (APRDL) for 10 years. He received his Ph.D. degree in Materials Science and Engineering from Northwestern University in 1985.