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Contact IR
Investor Relations Dept.
3F, No.76, Sec 2, Tunhwa S. Rd.,
Taipei, Taiwan, R.O.C.
Fax: 886-2-2700-6990
Email: ir@umc.com		  

Please direct questions regarding UMC's ADR to:
Citibank, New York
Toll-free: +1-877-CITI-ADR (+1-877-248-4237)
Shareholder Service Representatives are available Monday through Friday, 8:30 a.m. to 6:00 p.m., Eastern time.
http://wwss.citissb.com/adr/www/
Please direct questions regarding stockholders' accounts and stock transfers to:
Horizon Securities
 Address: 3F, No. 236 Sec. 4, Hsin-I Rd., Taipei, Taiwan, R.O.C.
Tel: 886-2-2326-8818
Email: service@honsec.com.tw
http://www.honsec.com.tw

Please note that all information is governed by the following Terms & Conditions.