Ultra Construction & Engineering Co., Ltd. - Offers expertise in tunnels, subways, railroads, bridges and road, and intelligent buildings. [Korean, English] - http://www.ultracons.com/
Beyond Space Group - Scope of work includes design of architecture, interior and landscape. [Korean, English] - http://www.beyondspace.co.kr/
Samsung Engineering Co., Ltd. - International engineering concern. Corporate profile and news. [Korean, English] - http://www.samsungengineering.co.kr/
Hyundai Engineering and Construction - Builds fuel and chemical plants, refineries, offshore facilities, and infrastructure. [English, Korean] - http://www.hec.co.kr/