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The ECHOS-OI design office located on Reunion Island was created by Vincent Coste in 2018. The projects carried out by its teams are in the field of special works in difficult access, in industrial environments and in mechanical engineering.
Vincent Cost also created the ECOVEX design office in 2016, an office located in the Paris region and specializing in hydromechanical structures: lock gates, dam valves, mobile bridges and footbridges, mobile roofs.