OEC participate in the tenders based on its qualification in may Ministries and councils .
Among them :
- MPW
- Power Water .
- CDR .
- MPT .
- EDL .
- Ministry of defense .
- Central funds for the displayed .
- Aids commission .

With lots of others and also within the private sectors .

OEC departments is divided into Divisions :

- Building : Factories – Ports – Governmental Building –
Private Building (Centers – Villas) Hospitals
retaining wall .

- Roads : New roads – Rehabilitation – Maintenance .

- Infrastructure : Telephones – Electricity – Waste
water – poles …

- Equipments : Rental and Maintenance of the
Equipments - work shops for steel and
compactors and all types of heavy
machines …

- Ready Mix : Betomix Sister company 51m3 / hrs with 4
pumps and 17 transit mixers