Monthly Sales Report - May 1999

Mr. YC Huang, TSMC Spokesman, pointed out that as a result of booming growth in markets and the Company's US joint venture, WaferTech has gradually started its volume production, the Company's sales units of 8-inch equivalent wafers set a new record high at 140.6 thousand wafers, and capacity was fully utilized in May 1999. Net sales for May 1999 registered a 7.3% increase in comparison with NT$5,238 million for April 1999 and a 38.5% increase over the same period a year ago. The sales figure of NT$5,619 million, for May 1999, has established a highest-ever monthly record.