Home > About STI > Contact & Map STI is presently located near the Government Complex in Seo-gu, Daejeon Address : 282-1, Wolpyung-dong, Seo-gu, Daejeon, S. Korea (Zip Code: 302-847) TEL : +82-42-366-6132, 6131, 6224 FAX : +82-42-366-6498,6499 E-mail : stimater@korea.kr