Johannes C. Huis in ’t Veld

Ballast Nedam NV provides civil engineering, development and construction services. It's products include non-residential, inner-city, smart solutions, international projects, development, concession and innovation. The company was founded in 1877 and is headquartered in Nieuwegein, the Netherlands.

Westerschelde Tunnel NV operates as a toll collection service agency. The company was founded in 1998 and is headquartered in Borssele, the Netherlands.

Nederlandse Organisatie voor Toegepast-Natuurwetenschappelijk provides scientific services. It includes research and consultancy for government, businesses and organizations. The company was founded in 1932 and is headquartered in Delft, Netherlands.

DHV Holding BV provides consultancy and engineering services worldwide. The company offers business & policy consultancy, technical advice, planning, design & engineering, construction management, project development & turnkey delivery, operations management and asset management services. It provides its services for the transportation including aviation, water, building and industry. The company was founded on September 1, 1977 and is headquartered in Amersfoort, the Netherlands

Part of E.ON SE, E ON Benelux Holding BV is an investment holding Dutch company. The company is based in Rotterdam, Netherlands.