From its beginnings in 1952, Consolidated Contractors Company, better known as CCC, has become the largest engineering and construction company in the Middle East. Today these initials embrace the ambitions and welfare of over 100,000 employees composed of more than 60 nationalities. While heavily concentrated in the Gulf region, CCC is nevertheless truly international with currently active projects in more than 40 countries spread over the Middle East, Africa, Caribbean & the C.I.S. countries, with related additional investments in Europe and the United States.
CCC has been present in Qatar since 1989 and currently has 40,000 employees here based mainly at Ras Laffan and Umm Said. CCC also constructed the Ritz Carlton Hotel and Khalifa Sport City both landmark projects in Doha.
CCC provides Project Management, Engineering, Procurement and Construction Services. CCC's services today encompass a broad range of activities such as:
• EPC contracts for upstream Oil & Gas, Water and Oil & Gas Pipelines.
• EPC contracts for High Quality Buildings, Industrial Buildings, Infrastructures and Networks.
• Complete Construction of Petrochemical Plants and Refineries, Oil Loading and Off-loading Terminals and Storage Facilities, Heavy and Light Industrial Plants.
• CCC is a pioneer in executing Plant Construction on a partner-ship basis with International Engineering Companies.
• Heavy Civil Construction of Power and Desalination Plants, Water Treatment Plants and Distribution Systems, Sewage Treatment Plants and Collection Networks, Dams and Reservoirs, Harbours and Docks, Airports, Bridges and Highway Interchanges, Roads and Highways.
All of the above conform to the highest Safety and Quality requirements (CCC is certified by BVQI to the ISO 9001 and ISO 9002 standards).

Harinsa Qatar is a recently formed contracting company and is the Middle Eastern branch of a large Spanish contracting company, Dico Harinsa Obras (DHO).

Harinsa Qatar specializes in the construction sector of the industry and in addition to the contracting arm, we have a concrete division, Al Marzouqi Concrete and we are the agent of Normetal, supplying extremely adaptable metal prefabricated buildings such as site huts.

In addition to the Qatar office, we have an office in Saudi Arabia and are planning the imminent opening of an office in UAE.

DHO is a dynamic and modern construction company with more than twenty five years experience in Spain and overseas.  As testament to it's commitment to quality and environmental issue, DHO is ISO 9001, 14001 and SA 8000 certified.  The technical and financial reliability of DHO allows us to build all types of projects.

Qatar Kentz is part of the Kentz Group, an Engineering and Construction Company established in Ireland in 1919, and has been operating in Qatar since 1997.  The creation of a subsidiary in Qatar has allowed the group to become more focused on the Qatari Market especially the Hydrocarbon sector and enabled Qatar Kentz to develop strong relationships with operating clients and large E&C Contractors.

Kentz Middle East (New regional entity est.2007) also has offices in the UAE, Saudi Arabia, Kuwait and Bahrain and offers its clients a wide range of engineering and construction services in the Civil/Structural, Mechanical, Piping, Electrical,(E), Instrumentation (I), Control and Communications disciplines. Kentz is recognized as a specialist in the fields of small-medium size multi-discipline EPC Projects, turnkey temporary facilities, E&I Construction and  Commissioning on mega projects, Shutdown and Turnaround Management, and Maintenance.

Having celebrated ten years of success in Qatar in 2007, Qatar Kentz has developed a committed and experienced local workforce which is ever expanding.  In the Doha office, Qatar Kentz has assembled a large multi-discipline engineering team enabling the company to target small to medium (US$5-$150 Million) size EPC Projects. Our E&I Construction reputation and capability remains as strong as ever.

Spacemaker
For the past 30 years Spacemaker has been designing & building a wide range of prefabricated units and now have one of the largest production facilities in the GCC. Below are listed examples of the buildings produced.

Offices single units and large     
Accommodations inter-linked complexes
Storage facilities
Villas
Mosques

Able to produce over 25000 M2 per month with a range of fit-out designs varying from industrial to high-spec., domestic, complete turnkey packages are offered to our clients.

TRAGS (Trading and Agency Services) was established in 1972 in line with the development of the industrial and domestic infrastructure of Qatar.

Through disciplined management and dedicated staff, TRAGS has developed into a leading business establishment with a large array of general as well as specialised contracting, construction and trading activities.

We United Qatari Jordanian Engineering (better known as UQJE), founded in Doha - Qatar as a subsidiary of Obeidat Engineering Group (OEG) which located in Amman – Jordan and established in year 2002. In response to the increasing demand of quality engineered Construction for the local market. The company expanded its facilities to become a leading provider of integrated finishing and structural solutions covering wide range of construction for high rising buildings, tower, Villas, Houses, government’s facilities, residential, sports, and education institutions.
UQJE strength is from its promises and high quality work, moreover we are very proud of our management power and plans, since we are going to the top step by step, starting from the small work till reach the huge work, same as what we did before in Jordan.
As a construction Engineering participant, UQJE remains committed to providing complete constructions solutions by offering a team-at-work approach that optimizes clients’ schedules, allowing for on-time project deliverables. The company’s product and services portfolio covers the engineering, finishing, and construction of all kinds of buildings.
We use advanced engineering/construction technologies to maximize our performance and ensure compliance to construction specifications and designated function. As well as we are participating in the following fields:
• High quality finishing, (Plaster, Block works, Painting, tiling, and false ceiling)
• water proofing
• Constructing of commercial buildings, residential buildings from A to key
• We supplying any kind of constructions materials
• Buildings maintenance.
• We are associated with Structural Steel manufacturers.

We are committed to provide quality construction works and services by:
• Competitive price and high quality construction and finishing works.
• Ensuring the reputation and integrity of our clients by maintaining an objective balance between architectural and technical requirements.

UQJE offers a full range of preconstruction and construction services. The project teams maintain a strong foundation of trust and mutual respect generated through positive relationships with clients, architects, engineers, subcontractors and suppliers. A company-wide policy encouraging shared performance responsibility ensures the highest degree of professional service and results on all projects undertaken.
Finally UQJE is fully owned by Jordanian Engineer, who is from Obeidat family which consider from the biggest families in Jordan.