Stéphane Langrand

Groupe ADF SAS provides technical maintenance services for the industrial sector. engineering, expertise, equipment and integration, production support and maintenance services. It offers solutions in the fields of aeronautics, space, defence industry, energy and utilities, oil and chemicals. The company was founded in 1962 and is headquartered in Vitrolles, France.

Cofathec SA provides industrial maintenance, heating, ventilation, air conditioning, and facility management services. It provides general maintenance services including valves refurbishing, pumps and rotating machines revision, and industrial boilers overhaul and repair, burners tuning, repair, and replacement. The company offers services through subsidiaries including Cofathec Services, Cofathec Omega, Cofathec en Italie, Cofathec au Royaume-Uni, and Cofathec Benelux. It was founded in 1994 by Jean-Paul George and is headquartered in Saint-Ouen, France.