CGG is a global participant in the geophysical seismic industry. Co. manufactures geophysical equipment and provides marine, land, and airborne data acquisition services. Co. also provides geosciences services, including data imaging, seismic data characterization, geosciences and petroleum engineering consulting services, and collecting, developing and licensing geological data. Co.'s clients are in oil and gas exploration and production industies. Co. divides its activities into four segments: Equipment, Contractual Data Acquisition, Geology, Geophysics and Reservoir (GGR), and Non-Operated Resources, including eight business lines, six Corporate functions, and four Group Departments.

Gaztransport & Technigaz is an engineering company specialized in membrane containment systems for liquefied gas transport and storage. Co. designs and markets technologies which combine operational efficiency and safety to equip liquefied natural gas (LNG) carriers, LNG floating platforms and multi-gas transport vessels. Co. also provides solutions for onshore storage tanks and the use of LNG as a fuel for vessels propulsion as well as a wide range of services in engineering, consultancy, training, maintenance assistance and technical studies at each stage of the liquefied gas chain.

McPhy Energy SAS is a France-based company that develops hydrogen storage and production solutions for the merchant hydrogen market and renewable energy markets. The Company sells solid-state hydrogen technology to provide a way for industrial gas renewable energy storage. Its products include the electrolyzer, a hydrogen generator that uses water as a raw material; solid hydrogen storage solutions with MCP and MGH series; and other ways that integrate electrolyzers and other solutions. It has offices in such countries as France, Italy and Germany and agents and distributors in Europe, Asia and Americas.