| Energoprojekt Holding plc | http://www.energoprojekt.rs | |
| Energoprojekt Hidroinženjering plc | http://www.ephydro.com | |
| Energoprojekt Urbanizam i Arhitektura plc | http://www.eparhitektura.rs | |
| Energoprojekt Entel plc | http://www.ep-entel.com | |
| Energoprojekt Industrija plc | ||
| Energoprojekt Visokogradnja plc | ||
| Energoprojekt Niskogradnja plc | ||
| Energoprojekt Oprema plc | ||
| Energoprojekt Energodata plc | ||
| Energoprojekt Garant plc |
| Ministry of Construction and Urbanism, Republic of Serbia | http://www.mgu.gov.rs | |
| Ministry of Transport, Republic of Serbia | http://www.ms.gov.rs | |
| Ministry of Agriculture, Forestry and Water Management, Republic of Serbia | http://www.mpt.gov.rs | |
| PE Roads of Serbia | http://www.putevi-srbije.rs | |
| Koridori Srbije Ltd. | http://www.koridor10.rs | |
| Republic Directorate for Water, Serbia | http://www.rdvode.gov.rs | |
| Belgrade City Administration, Serbia | http://www.beograd.rs | |
| Belgrade Land Development Public Agency, Republic of Serbia | http://www.beoland.com |
| PROVIAS NACIONAL - Ministerio de Transportes y Comunicaciones, Peru | http://www.proviasnac.gob.pe | |
| OSCE - Organismo Supervisor de las Contrataciones del Estado, Peru | http://portal.osce.gob.pe/osce | |
| UNRA - Uganda National Roads Authority | http://www.unra.go.ug | |
| KCCA - Kampala Capital City Authority, Uganda | http://www.kcca.go.ug | |
| Ministry of Transport and Communication of the Republic of Kazakhstan | http://mtc.gov.kz | |
| Road Development Agency, Zambia | http://www.rda.org.zm |
