EST Building, 3 Banpo-daero, Seocho-gu, Seoul 06711, Korea
- CEO: Sangwon Chung
- Business Registration Number: 229-81-03214
- Mail-Order Business Registration Number: 2011-Seoul Seocho-1962
- Tel: +82-1544-8209
- Fax: +82-2-882-1155
- Email. altools@estsoft.com