Certification Authority : KOSHA (Korea Occupational Safety & Health Agency)

Initial certification acquisition date : 2011-07-03

Validity : 2011-07-03 ~ 2014-07-02

Scope of Certification : This is certify that the occupational safety and health management system of the above company has been assessed and complied with the requirements of the KOSHA 18001 Standard

Certification Authority : Bureau Veritas

Initial certification acquisition date : 2003-12-17

Validity : 2003-12-17 ~ 2012-12-16

Scope of Certification : Management, Design/Engineering, Procurement with Production Installation and Servicing for Civil, Architectural & Electrical Works Including Mechanical and Plant Activity Landscaping Works, Industrial Facilities Works, Communication Works, Fire-Fighting Works, Gas Facilities Works, Environmental Pollution Prevention Works