Sylvine Mazet

CS Group SA engages in the design, integration, and operation of critical communication and information systems. The company operates through the following segments: Defense & Security, Space, Aeronautics, Energy & Industry, and Other Sectors. The Defense & Security segment engages in security and protection for infrastructures and sensitive sites. The Space segment engage in space applications and systems. The Aeronautics segment designs and develops embedded real-time critical software and supports clients throughout the life cycle of the systems from digital design to maintenance, while responding to competitiveness and cost optimization requirements. The Energy & Industry segment provides industries performance and risk management services. The Other Sectors segment provides passenger information, operational support, mobility, secure systems. It also includes nuclear risk management, and industrial computing. The company was founded on December 13, 1968 and is headquartered in Le Plessis Robinson, France.

Elyo SA provides energy and environmental management services. The firm operates district energy networks, manages utilities for industrial processes, and operates and maintains thermal and technical equipment. The company's clients include Lamy agency, Ecole de Mines, Airbus, Turbomeca, Bridgestone, and Nissan. Elyo was founded in 1994 and is headquartered in Nanterre, France.

GRTgaz SA provides distribution and transportation of natural gas. The firm also provides transmission services on behalf of natural gas shippers, natural gas suppliers on the French market or traders who buy and sell natural gas on the European markets. The company was founded on January 1, 2005 and is headquartered in Bois-Colombe, France.

Sita Sud provides waste collection and treatment services. The company is headquartered in Narbonne, France.