HSINCHU, Taiwan, February 22, 2008 - UMC (NYSE: UMC, TSE: 2303), a leading global semiconductor foundry, today held its annual supply chain management summit. More than 300 global suppliers from the equipment, raw materials, facilities, components and test and packaging sectors participated in the event. This year's event focused on breaking through cost barriers, sustaining long-term partnerships and putting corporate social responsibility into practice, while stressing environmental protection and being active in public interest activities. UMC also illustrated its future procurement strategies and expectations for its supply chain partners and signed a corporate social responsibility (CSR) declaration with its suppliers. Representatives from Applied Materials, ShinEtsu, 3M and L&K Engineering signed the declaration with UMC, with Niven Huang, the secretary-general of Taiwan Business Council of Sustainable Development, present as the signing witness. The signing was followed by an awards ceremony for outstanding performers.

"The 2008 supply chain summit and signing ceremony demonstrates UMC's continued commitment to improve the sustainable value of the overall supply chain by working closely with its partners," said Dr. Frank Wen, president, in charge of Central Integrated Manufacturing & Technology at UMC. "As CSR implementation has become a key element for sustainable growth, UMC has put forth significant efforts in this area in recent years, and has been awarded with many honors such as the National Sustainable Development Award, Asian CSR Award, Enterprises Environmental Award, Industrial Safety & Health Award, National HRD InnoPrize and National Standardization Award for Corporate Standards."

To address issues such as global warming and greenhouse gas emissions, UMC became the first foundry to replace C2F6 with lower polluting GWP C3F8 through its collaboration with 3M. This is expected to significantly reduce PFC emissions to help the environment while also lowering costs for the company. The CSR declaration received positive feedback from UMC partners after being distributed to each supplier through UMC's procurement system. Seven outstanding suppliers won UMC's remarkable contribution award for 2008:

Equipment:
Dainippon Screen Electronics. Co., Ltd)

Raw Materials:
HOYA Corporation
Siltronic AG
Tokyo Ohka Kogyo Co., Ltd.

Facility:
Trane Taiwan

Components:
FEEDBACK Technology Corp.
Advanced Energy Taiwan

UMC (NYSE: UMC, TSE: 2303) is a leading global semiconductor foundry that manufactures advanced process ICs for applications spanning every major sector of the semiconductor industry. UMC delivers cutting-edge foundry technologies that enable sophisticated system-on-chip (SoC) designs, including volume production 90nm, industry-leading 65nm, and mixed signal/RFCMOS. UMC's 10 wafer manufacturing facilities include two advanced 300mm fabs; Fab 12A in Taiwan and Singapore-based Fab 12i are both in volume production for a variety of customer products. The company employs approximately 13,000 people worldwide and has offices in Taiwan, Japan, Singapore, Europe, and the United States. UMC can be found on the web at http://www.umc.com.