Danziger Holding B.V. is the holding company of Teygeler Machinehandel, which sells, maintains and repairs a large number of construction tools.

Dimco B.V. is situated in the Port of Amsterdam. The company is a specialist in designing and constructing marine infrastructure. Its projects complement and reinforce the activities of other companies within parent company DEME.

Dyka B.V. specializes in the manufacturing and sale of plastic piping systems. Many of those systems are used in civil engineering and in the housing construction and utilities industries.

The family-run business Gebr. van 't Hek B.V. specializes in complex foundation constructions. They include projects on the water, next to railway tracks, in city centers and in construction pits.

Gebrs. Bouwman sloop- en grondwerken B.V. specializes in demolition and site preparation. The demolition work includes the stripping of offices and the dismantling of buildings.

Germabouw B.V. is specialized in rental, sale and assembly of scaffolding materials. The steel and aluminum scaffolds are usually erected by a team of specialists. The company uses products from leading manufacturers.

Heijmans Facilitair Bedrijf operates a production facility in the Port of Amsterdam. At the site, the company prepares asphalt for road construction projects in the central and northern regions of the Netherlands.

Holland Testing Technics carries out inspections on hoisting and lifting tools and provides NEN3140 certification for electrical installations. It also inspects climbing materials, fall protection and storage racks.

Hollandia Steigerverhuur B.V. specializes in the rental, assembly and dismantling of scaffolding.