Seoul Branch Office
- Address8F, 18, Teheran-ro 83-gil, Gangnam-gu, Seoul, 06169, Republic of Korea
- TEL+82 2-555-1536
- FAX02-3142-7670
- Emailbestgcs@gcsgroup.co.kr
Seongnam Headquarters
- Address3F, 33, Sagimakgol-ro 62beon-gil, Junnwon-gu, Seongnam-si, Gyeonggi-do, Korea (Sangdaewon-dong, Center M)
- TEL+82 2-555-1536
- FAX02-3142-7670
- Emailbestgcs@gcsgroup.co.kr