Esatablised in 1997 with a major business starter was in construction engineering and consultant services. It has been one of major players in the country. Then in 2002 DRB entered a new level of cooperationship by joining Delta Group, a group of several different companies in different business cores, spread out around South East Asia and Middle East Asia. Since then, DRB made big steps in the industry of construction and consultant, including segments in the telecommunication facilities, property and strategic trading. In 2010 DRB opens another new segment, it starts to enter the energy sector. There are 4 major divisions in this Energy Segment, they are Oil & Gas, Geothermal Coal and Mineral, Electricity & Power, Renewable Energy.