The Prefer company is a branch of the Lliège family-group Gustave Portier Industries Group based at Flémalle.
Its 3 activities comprise:
- the manufacture of concrete blocks for traditional constructionn
- the manufacture of concrete sleepers for Belgian and foreign railway networks
- the pre-fabrication of tailor-made concrete members for road safety projects, and civil engineering companies, as well as the development of wood-cement concrete constructive systems for low energy consumption apartment buildings.