Herman G. B. Spenkelink

Dura Vermeer Groep NV provides construction and infrastructure development services. The firm also engages in the design and maintenance of land sites, roads, bridge and tunnel structures, railways, underground cables, and pipelines. It serves clients in the housing, government, education, health and welfare, energy and industrial sectors. The company was founded on November 13, 1998 and is headquartered in Rotterdam, the Netherlands.

AGAR Holding BV operates as a holding company with interests in the supply of building products. The firm products and services in the field of masonry, concrete, mortar, mortar, concrete and sand, gravel to customers throughout the Netherlands. The company was founded in 1955 and is headquartered in Hengelo, the Netherlands.

Alewijnse Holding BV Alewijnse Holding BV invests in companies with interest in the provision of electrical engineering services. It operates through the Maritime and Industrial Automation business units. The Maritime business unit designs and integrates electrical and automation systems on shipping, yachts, offshore and transport, tugs and workboats, dredgers, naval vessels and short sea vessels. The Industrial Automation business unit offers standard solutions for bridges and locks, food, and water industries. The company was founded by Cornelis Alewijnse in 1900 and is headquartered in Nijmegen, the Netherlands.

Oranjewoud NV engages in the provision of construction and engineering services. It operates through the following segments: Consultancy & Engineering Services; Rail Systems; Civil Infrastructure; International Infrastructure and Rail Systems; Technology & Buildings; and Other. The Consultancy & Engineering Services segment offers business plans and advisory services. The Rail Systems segment designs, installs, and manages railroad and train systems. The Civil Infrastructure segment constructs and repair roads, bridges, and structures. The International Infrastructure and Rail Systems segment offers traction electronics, on-board power grids, underwater and foundation engineering, monitoring and power systems, and polymer modified bitumen. The Technology & Buildings segment develops and maintains technical systems and buildings in the healthcare, mobility hub, and commercial sectors. The Other segment deals with sports and temporary staff units. The company was founded on October 18, 2001 and is headquartered in Gouda, the Netherlands.

Van Kamperdijk Exploitatie BV provides asset management services. The private company is based in Almelo, Netherlands and has subsidiaries in Netherlands.