2000
- JulAcquired license for information communication construction business [No. 111478]
1999
- DecISO-9001 [Quality management system certification]
1997
- JanAcquired license for firefighting facility construction business [Seocho 97-17]
1994
- JunAcquired license for electric work [Seoul-00264]
- MaySamyoung Corporation established / CEO Dong Heum Kuem