Philippe Lefèbvre

Hiolle Industries engages in the provision of environmental and industrial services. It operates through the Railway and Aeronautics and Industrial Services and Environment segments. The Industrial Services and Environment segment offers traditional industrial services; transcontinental industrial transfers of turnkey factories; design, manufacturing, installation, and maintenance of waste treatment equipment; and engineering services in the field of water treatment. The Railway and Aeronautics segment includes maintenance, after-sale, and cabling services for contractors. The company was founded by Jean-Michel Hiolle in 1976 and is headquartered in Prouvy, France.

Egernylux SA provides agricultural effluent treatment and valorization services. The company is headquartered in Marche-en-Famenne, Belgium.

Dendrogenix SA is a Belgian Belgium-based biotech company founded in 2018 that designs, develops, and brings proprietary molecules called dendrogenins to patients in the fields of hearing loss and neurology. The company is based in Liege, Belgium. Dendrogenins are cholesterol derivatives that stimulate cell differentiation in the immune and nervous system and induce growth of dendrites on dendritic cell and neuron precursors. The company has developed strong know-how in the chemical and biological aspects of dendrogenins. The company was founded by Stéphane Silvente, Gérard Tobelem, and Philippe Lefèbvre, with Stéphane Silvente serving as CEO since 2018.

Wind4Wallonia SA is a Belgian company that specializes in energy transition through its three professions\: electricity, natural gas, and energy services. Wind4Wallonia is based in Brussels, BE, and was founded in 2014. The private company helps manage local communities, universities, hospitals, and other organizations to engage in a neutral carbon trajectory while controlling costs, improving energy efficiency and performance, and increasing attractiveness. The CEO is Nicolas van den Abeele.