Assystem is an independent engineering group based in Paris created in 1966.

[3] The corporation notably participated to all the EPR (European Pressurized Reactor) construction projects in the world (in Flamanville (France), Taishan (China), and Okiluoto (Finland)).

Indeed, in 2005, Assystem acquired the Atena subsidiary of the German company MTU Aero Engines.

[6] In addition, the company has also been involved in the engineering of the future Flying Whales airship since 2018.

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