New York, December 8, 2000 - UMC (NYSE: UMC), one of the world's leading semiconductor foundries, today released their company financial results for the month of November pursuant to Taiwan SFC regulations and announced their projected outlook for the remainder of Q4 2000 and into Q1 of next year. The results reported by UMC are as follows:

1. Sales revenue for the month of November was $10.8B NTD (327M US$), a record high, and in line with management's expectations.
2. Our current outlook for Q4 2000 sales revenue is consistent with previously released expectations: around 8-12% growth over Q3 2000.
3. Order visibility into Q1 2001 is limited, due to inventory uncertainty and other market factors at this time. However, we see seasonal order patterns (typically Q1 is 10-15% slower than the preceding Q4) and some forecast reductions. As a result, we currently expect our Q1 2001 sales revenues to exceed those of Q1 2000 by approximately 40%

Except for statements in respect of historical matters, the statements in this release are "forward-looking statements" within the meaning of U.S. Securities laws. Such forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause the actual performance, financial condition or results of operations of UMC to be materially different from any future such matters implied by the statements. 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, and technological and development risks. Investors should refer to the section entitled "Risk Factors" in our Registration Statement on Form F-1 filed with the U.S. Securities and Exchange Commission on September 15, 2000. The financial forecasts and forward looking statements in this release reflect the current belief of UMC as of this date and UMC undertakes no obligation to update this forecast for events or circumstances that occur subsequent to this date.