Hsinchu, Taiwan, February 26, 2013 - United Microelectronics Corporation (NYSE: UMC; TWSE: 2303) ("UMC"), a leading global semiconductor foundry, today announced the implementation of an AEO (Authorized Economic Operator) certification program to address international logistic trends, satisfy customer requirements for supply chain security, and follow government recommendations. UMC hosted an AEO kick-off meeting on Feb 22 between UMC vice president ML Liao, director general of the Science Park Administration Tzong Ming Yen, deputy director of Taipei Customs Office Ming Chu, Liu, and UMC's supply chain partners.

ML Liao, vice president at UMC said, "As a foundry leader, UMC recognizes the necessity of AEO implementation to respond to international anti-terrorism trends and strengthening supply chain security. We expect to enhance supply chain security and accelerate custom clearance by implementing an AEO certification program, and to further strengthen our export competiveness and bring efficiency benefits for both UMC and our customers."

Tzong Ming, Yen, director general of the Science Park Administration said, "Since the 911 terrorist attacks, customs from all over the world have strived to promote an AEO certification program to help improve risk management and customs clearance efficiency, and benefit corporations and its customers. We’re pleased to see UMC's efforts on AEO, and hope that other companies from Hsinchu Science Park can follow their initiative."

Taipei Custom Office said, "We're currently in the process of signing Mutual Recognition Arrangement (MRA) with the United States, China, and Singapore. In the future, bilateral signees will provide counterparts with faster, preferential import treatment. UMC has sites in all the above mentioned countries and will directly benefit from the MRA signing. Moreover, for the Singapore MRA, if UMC can acquire AEO certification by July of this year, we will appoint UMC as an AEO demonstration company."

UMC (NYSE: UMC, TWSE: 2303) is a leading global semiconductor foundry that provides advanced technology and manufacturing for applications spanning every major sector of the IC industry. UMC's robust foundry solutions allow chip designers to leverage the company's leading-edge processes, which include 28nm poly-SiON and gate-last High-K/Metal Gate technology, mixed signal/RFCMOS, and a wide range of specialty technologies. Production is supported through 10 wafer manufacturing facilities that include two advanced 300mm fabs; Fab 12A in Taiwan and Singapore-based Fab 12i. Fab 12A consists of Phases 1-4 which are in production for customer products down to 28nm. Construction is underway for Phases 5&6, with future plans for Phases 7&8. The company employs over 13,000 people worldwide and has offices in Taiwan, Japan, China, Singapore, Europe, and the United States. UMC can be found on the web at https://www.umc.com.

Note from UMC Concerning Forward-Looking Statements
Some of the statements in the foregoing announcement are forward looking within the meaning of the U.S. Federal Securities laws, including statements about future outsourcing, wafer capacity, technologies, business relationships and market conditions. Investors are cautioned that actual events and results could differ materially from these statements as a result of a variety of factors, including conditions in the overall semiconductor market and economy; acceptance and demand for products from UMC; and technological and development risks. Further information concerning these risks is included in UMC's filings with the U.S. SEC, including on Form F-1, F-3, F-6 and 20-F, each as amended.