Marinus den Harder

Koninklijke Volker Wessels Stevin NV provides construction and civil engineering services. It operates business through the following markets: building and property development, energy and telecom, and infrastructure. It offers housing and utility construction, industrial construction, property development, civil engineering, network infrastructure, telecommunications infrastructure, railway construction and maintenance, technical installations, traffic technology, plant and machinery management, park management, building supplies and consulting services. The company was founded in 1854 and is headquartered in Amersfoort, Netherlands.

Reggeborgh Beheer BV is a private equity family office of the Wessels Family founded in 1991. The firm is headquartered in Rijssen, the Netherlands.

Reggeborgh Invest BV is a family office founded in 1991 by the Wessels family. The Dutch company has grown into an international holding with subsidiaries in Germany, Belgium, and the Netherlands.

Norit International NV engages in the research, development, manufacture and sale of activated carbons. Its activated carbons are used in environmental, health, safety, and industrial applications. The company was founded on January 18, 1918 and is headquartered in Amersfoort, the Netherlands.

The Facility Group, Inc. provides engineering, architecture, and program and construction management services. It provides its services to the distribution, food, industrial, government, education, and criminal justice markets. The company was established in 1986 and is headquartered in Smyrna, GA.

KWS Infra BV consists of construction, reconstruction, maintenance of pavements, drainage and earthworks. It delivers projects on turnkey, construction or design, construct team, PPP arrangements and contracts. The company was founded in 1901 and is headquartered in Vianen, Netherlands.

Argos Groep BV Wholesales and distributes petroleum products. It offers fossil fuels, such as petrol, diesel, natural gas, and fuel oils; petrol with bio-ethanol, bio-ethanol with petrol and diesel with rapeseed oil; and metalworking and machining fluids, hydraulic fluids, engine and transmission oils, and automotive lubricants, as well as industrial lubricants, coolants, and greases. The company founded by Peter Jacob Goedvolk in 1984 and is headquartered in Rotterdam, the Netherlands.

Part of Koninklijke VolkerWessels NV, Vialis BV makes infrastructure intelligent with smart solutions and technology. The company is based in Haarlem, Netherlands. Vialis prioritizes safety in all of its operations as a subsidiary of VolkerWessels. The Dutch company specializes in integrating public lighting into comprehensive projects that contribute to safety, mobility, and sustainability. With the increasing complexity of traffic systems, Vialis continues to develop innovative solutions to meet the evolving needs of the industry.

North Sea Group is a key player on the Western European downstream oil market. The company combines storage and distribution with the international trading and sale of mineral oils and biofuels. The customers, including major oil companies, the international shipping industry, trading houses and resellers, have relied on the product quality and market-oriented approach of North Sea Group for decades. By expanding into Asia and South America, the European company is further broadening its position on the increasingly global oil market, paying careful attention to issues of safety, sustainability and the environment. The Group's commercial divisions trade in all mainstream mineral oil products such as heavy fuel oil, automotive diesel, heating oil, marine diesel, kerosene and mogas. Over the past few years biofuels have become a key new product group for North Sea Group. North Sea Group was founded in January 2009 to coordinate the merger between all divisions.

Van Gelder Groep BV operates as a financial holding company with activities in the infrastructure sector. Its subsidiaries specialize in asphalt installation, multiline marking, railway, cable, piping, and mounting operations. The company was founded in 1916 and is headquartered in Elburg, the Netherlands.

VolkerRail Nederland BV provides construction, management and maintenance services to railway tracks. The company is headquartered in Vianen, the Netherlands.

Van Hattum en Blankevoort BV designs, builds and maintains civil structures such as bridges, viaducts, flyovers, tunnels, underpasses, underground stations, basements and foundations. The company was founded in 1831 and is headquartered in Vianen, the Netherlands.

Aveco de Bondt BV operates as an engineering company. It provides research and consultancy services regarding spatial development, buildings, mobility & infrastructure, energy & sustainability, water and industry. The company is headquartered in Holten, the Netherlands.

Deutsche Glasfaser Holding GmbH provides broadband services. It offers glass fiber, DG router, router, and speedtest. The company is headquartered in Borken, Germany.

Varo Energy BV engages in the refining, storing, sale, and supply of oil and fuel products. It offers liquid petroleum, gasoline, biofuels, ultra low sulphur diesel, heating oil, aviation fuels, bitumen, and bunker fuel oil. The company is headquartered in Rotterdam, the Netherlands.

Tivo Exploitaties BV is an investment holding Dutch company. The private company is based in Rijssen, Netherlands.