Construction of a plant producing 1.3 propanediol (PDO) and butyric acid (AB), a green chemistry facility, using the principle of industrial fermentation and using natural plant resources as raw materials on the Carling/Saint Avold platform operated by TOTAL. The construction of this unit is planned in two phases: a first, with a capacity of 6,000 tonnes and creating 43 jobs, is to take place during 2018 and 2019 in order to consider starting the activity at the end of 2019 or early 2020. A second phase, quadruplant capacity and doubling employment, could be launched in 2021. This investment corresponds to all the criteria identified for PIA3 Industrial Future Investments.