Company Dong-Ah Geological Engineering Company Ltd.

Dong-Ah Geological Engineering Company Ltd. is a Korea-based company engaged in the civil engineering business. The Company operates its business through four main divisions: mechanical tunnels division, which uses shield and semi-shield methods to construction tunnels; ground improvement division, which uses deep cement-soil mixing (DCM) method in ground construction works; general civil engineering division, which engages in the construction of roads, subways, bored piles and diaphragm walls, and engineering division, which provides design, research, measurement and other services. The Company is also engaged in the environment business, which engages in the construction of water treatment systems, wastewater reclamation and reusing systems and others.

Number of employees: 253