- Electric work in Godeog Branch for KT Asset Development Center
- 1st Power Supply Work of Gyeonggi areasĄŻ facilities for KT Gangnam Network Construction Center
- 2nd Power Supply Work of Gyeonggi areasĄŻ facilities for KT Gangnam Network Construction Center
- Power supply facility strengthening work of International Satellite Center for KTC
- Power supply facility protection work for KT
- Communication work for extension and remodeling of Yongin Branch for KT Networks
- Electric work for construction of Pyeongtaeg over-ground tank for Ssangyong E&C
- 4th Power Supply Work of Gyeonggi areasĄŻ facilities for KT Gangnam Network Construction Center
- Extension of EILITE of exchange office for KTF
- Power supply work for sustainable advanced arrangement for KT Gangnam Network Construction Center
- Improvement and strengthening of incoming/distribution facility of Bugjeonju for KTC
- BBH electric work for KT Gangdong Branch
- Building security lamp supplementation work for KT Seocho Branch
2006