PT Encona Inti Industri (EII) started as the Project & Construction Management division of PT Encona Engineering, one of the few, if only very limited multi-disciplined forerunners in the Indonesian engineering industry. Set up as an independent subsidiary company in 1981, it officially operated as a wholly legal entity in 1985. Benefitting from the Know-How and Know-Who gained during all those times operating as the afore-mentioned division, EII proceeded to organize and manage general and specialized projects such as Petrochemical plants, Production or Processing industries, Power plants, Heavy Industrial facilities and Infrastructure projects.