Christian Vesperini

Nge Genie Civil provides civil engineering construction services. The company is headquartered in Saint- Etienne-Du Gres, France.

Guintoli SAS provides quarries, roads and underground construction services. The company was founded on March 19, 2003 and is headquartered in Saint-Etienne-du-Grès, France.

TSO constructs railway tracks and overhead lines works. It includes track construction, renewal and maintenance, electrification and catenary upgrades, survey and rail software development, and rail safety and signalling. The company was founded in 1927 and is headquartered in Chelles, France.

Siorat SAS constructs roads and highways. The private company is based in Saint-Étienne-du-Grès, France. The CEOs of the French company are Christian Vesperini, Stéphane Perez-Morillas.