ISO 9001

ISO 14001

D&B - Certificate of D-U-N-S® Number Issuance

Certificate of Qualification for gas turbine supplier by Doosan Heavy Industry & Construction Co., Ltd.

Toshiba Thermal Power Plant - Quality Certification

Toshiba Nuclear Power Plant

GE CERT

MHI - Certificate for Authorization and Registration

HITACHI - Certificate of Approval

MAN - Certificate of Approval

BHEL

BHEL Bhopal

Certificate of Registration for facility repair supplier by Korea Hydro & Nuclear Power Co., Ltd.

Certificate of Qualification for maintenance supplier by Korea Midland Power Co., Ltd.

Certificate of Qualification for maintenance supplier by Korea Western Power Co., Ltd.

Certificate of Qualification for maintenance supplier by Korea East-West Power Co., Ltd.

Certificate of Qualification for maintenance supplier by Korea South-East Power Co., Ltd.

Certificate of Qualification for maintenance supplier by Korea Southern Power Co., Ltd.

Certificate of Supplier for the power generation maintenance material by Korea Southern Power Co., Ltd.

Certificate of Export Company by Korea Electric Power Corporation

Certificate of Cooperation Company by Korea Western Power Co., Ltd.

Certificate of Nomination for 2011 excellent partner for joint growth by Korea Hydro & Nuclear Power Co., Ltd.

Certificate for affiliated R&D Center

Venture Business Certificate