DL E&C. 

DL E&C Co., Ltd. is a global construction firm specializing in comprehensive engineering, procurement, and construction (EPC) solutions. The company executes diverse projects across several key areas: industrial plant works, including refinery, gas, petrochemical, energy, and environmental facilities; civil engineering infrastructure like roads, bridges, ports, water resources, railroads, and tunnels; commercial and institutional building construction such as offices, cultural venues, sports complexes, hotels, resorts, educational and healthcare facilities, and logistics centers; and housing developments encompassing apartments, mixed-use residential/commercial properties, and office-hotel accommodations. Established in 1939, its headquarters are located in Seoul, South Korea.