Preparation and sale of sand and gravel, crushed products and concrete, as well as participation in similar companies. The planned acquisition of assets was carried out as follows: immediately after its foundation, the company acquired from "Sables et Graviers d'Invua SA" a distinct and permanent superficies right, valid until 31.12.2019, registered in the Land Register of the Commune of Posieux, article 223, on a surface of 8,222m2, in exchange for an annual indemnity of CHF 4/m2 at most, indexed to the Swiss consumer price index of 31.12.1986.