Charles-Louis was promoted to manager of Accumalux Group at the age of 30, and subsequently took over the management of its parent company, Poudrerie de Luxembourg. In the following years he succeeded in developing the group internationally, with productions in Czech Republic, Australia, Bulgaria and Russia. He also initiated real estate project ParcLuxite, known as a “mini Silicon Valley” in Kockelscheuer, Luxembourg. Charles-Louis is a member of several boards of directors, including Luxport s.a., Rotarex s.a., Contern s.a., Eurobéton s.a., Portlux s.a., Eurobat, and Luxembourg Air Ambulance. He is also a member of the Advisory Committee of ING Bank Luxembourg.