New Customers
For new customer inquiries,
please direct all questions to
sales@umc.com


Worldwide Offices
Headquarters:
UMC
No. 3, Li-Hsin 2nd Road,
Hsinchu Science Park,
Hsinchu, Taiwan, R.O.C.
Tel: 886-3-578-2258
Fax: 886-3-577-9392
Email: foundry@umc.com
Directions: Map (pdf)

In North America:
UMC USA
488 De Guigne Drive,
Sunnyvale, CA 94085, USA
Tel: 1-408-523-7800
Fax: 1-408-733-8090
Email: sales@umc-usa.com
Directions: Map (pdf)

In Europe:
UMC Europe BV
World Trade Center, H-Tower,
Schipholboulevard 243
1118 BH Schiphol, The Netherlands
Tel: 31-(0)20-5640950
Fax: 31-(0)20-6977826
Email:europe@umc.com

In Japan:
UMC Japan
15F Akihabara Centerplace Bldg.,
1 Kanda Aioi-Cho Chiyoda-Ku
Tokyo 101-0029 Japan
Tel : +81-3-5294-2701
Fax: +81-3-5294-2707
Email: foundry@umcj.com

In Singapore:
UMC-SG
No. 3, Pasir Ris Drive 12,
Singapore 519528
Tel: +65-6213-0018
Fax: +65-6213-0008

Please direct questions regarding UMC's ADR to:
Citibank American Depository Receipt Services
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.

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


Media Contacts
In the USA:
KJ Communications
Eileen Elam
1-650-917-1488
eileen@kjcompr.com


Career Opportunities
Please click here to learn about career opportunities at UMC.

Website Feedback
We welcome your questions and opinions. Please send any comments regarding the MyUMC Online Service Portal to myumc@umc.com. For comments regarding our corporate website, please email webmaster@umc.com.