IJbouw B.V. is a multidisciplinary construction company. The company provides services in the field of civil engineering and construction.

Jansen Beton Amsterdam B.V. concerns a facility for the production of concrete. At the location, a variety of concrete mortars are manufactured for construction projects in the Amsterdam region.

J. de Jonge Flowsystems provides services related to flow system technology. With such systems, liquids and gases are transported between logistics companies, production facilities and storage locations.

Houthandel Jongeneel has a branch in the Port of Amsterdam. It is one of over forty retail stores the company operates in the Netherlands. The store sells timber, plate materials, construction materials as well as hardware tools.

Konstruktiebedrijf Visser B.V. specializes in complex steel structures for construction and renovation. Products include CE-certified constructions, fencing, (emergency exit) stairs and galvanized lintels.

KWS Infra Amsterdam B.V. specializes in project design, remediation, asphalt maintenance, sewer works, paving and hydraulic engineering projects.

Lievense provides services at the intersection of hydraulic engineering, pipeline infrastructure and environmental technology. These services usually involve preparation, design and implementation of infrastructure construction projects.

Machine- en Constructiebedrijf Smalo B.V. provides metal repairs of seagoing vessels and ship cranes. The family-run business also manufactures steel constructions for construction projects and for bar-work railing.

De Vries & Van de Wiel is a contracting company specializing in civil engineering, environmental technology and sand exploitation. The activities vary from soil and waterbed remediation to dredging and landfill techniques.