Olivier Grandjean

Les Enrobes du Gerny SA is a Belgian company that constructs expressways and roads. The private company is based in Marche-en-Famenne, Belgium and has subsidiaries in Belgium. The company was founded in 1986.

Hermann Köppen GmbH is an investment services company based in Bitburg, Germany. Hermann Köppen GmbH provides investment services. The German company was founded in 1983 and is led by CEOs Christophe Thiry and François Thiry.

G.N.B. Beton SA is a concrete production and delivery company based in Bastogne, Belgium. The Belgian company specializes in producing benor concrete, fiber, lean, and draining concrete. GNB Beton is nominated at the Trends Gazelles 2023 in the province of in the category of medium-sized enterprises. The private company offers ready-to-use concrete, floor slabs, and stackable blocks throughout Wallonia. The company's gn-blocs are stable and repositionable piles that do not require mortar, making them perfect for temporary and permanent structures. The company was founded in 2000 and offers fresh concrete production and delivery "just in time" within approximately 120 minutes.

Carrieres de Gres Reunies SA is a Belgian company that was founded in 2000 and engages in the extraction of building and ornamental stones. The private company is based in La Roche-en-Ardenne, Belgium.