ASE Group Celebrates 20th Anniversary; Twenty Years of Providing the Best in Semiconductor Packaging and Testing Services.

SANTA CLARA, Calif. -- Advanced Semiconductor Engineering Incorporated (ASE) (TAIEX:2311) (NYSE:ASX), the world's largest semiconductor packaging and testing company, announced today that it is celebrating its twentieth anniversary. Founded in 1984, ASE has flourished to become a world-class company, committed to providing global customers with the most advanced technologies, innovative product solutions, and dedicated customer service.

ASE's strong drive and commitment culminated in its IC Assembly and Testing revenues propelling the company to the number one industry position in 2003. In addition, ASE was recently ranked number 85 on Business Week's 2004 INFO TECH 100 List, which featured some of the most renowned global companies of the twenty-first century.

"ASE has grown exponentially over the past twenty years, from our first manufacturing facility located in Kaohsiung, Taiwan, to over ten strategic manufacturing locations and numerous sales support offices worldwide," said Jason Chang, Chairman of the ASE Group. "Today, we are proud to celebrate our achievements and we attribute our success to the loyalty of our customers and the dedication of our employees worldwide."

ASE's focus on meeting the industry's increasing demand for faster, smaller, and higher performance integrated circuits (ICs) constantly drives the company into new opportunities for growth. This year, ASE expanded its manufacturing capacity to include state-of-the-art facilities in Yamagata, Japan; Kaohsiung, Taiwan and Shanghai, China. In addition, the company continues to ramp-up its substrate manufacturing capabilities, providing clear economic and logistic advantages to customers by offering a highly successful turnkey model encompassing circuit design through assembly and final test, and board and system-level manufacturing services.

"Our commitment remains to be a true extension of our customers' manufacturing supply chain," said Tien Wu, President of ASE Americas, Europe and Japan. "We will continue to provide customers with value-added products and services as well as maintain a high standard in our manufacturing locations over the next twenty years, and beyond."

About ASE Group

The ASE Group is the world's largest provider of independent semiconductor manufacturing services in assembly and test. As a global leader geared towards meeting the industry's ever growing needs for faster, smaller and higher performance chips, the Group develops and offers a wide portfolio of technology and solutions including IC test program design, front-end engineering test, wafer probe, wafer bump, substrate design and supply, wafer level package, flip chip, system-in-package, final test and electronic manufacturing services through Universal Scientific Industrial Co Ltd, a member of the ASE Group. The Group generated sales revenues of $2.9 billion in 2003 and employs over 29,000 people worldwide. For more information about the ASE Group, visit www.aseglobal.com.