USEFUL LINKS The Concrete Industry Federation, or FEBE for short, is the professional organisation for precast concrete in Belgium. The association of manufacturers of concrete structural elements. This association is part of FEBE. Certification body for concrete products. Kiwa is an independent, high-quality organisation whose core activities are research and certification. Voka is the Flemish network of enterprises, consisting of Voka - Flemish Employers Association and Voka - Chambers of Commerce.