STEN is the company of the Group engaged in the sourcing and storing of the blocks of granite from all over the world, while CAMPOLONGHI ITALIA S.r.l. yard located in Querceta stores the various granites, the white and coloured marble slabs, the travertines and the more significant stones on the international stone market.

CAMPOLONGHI ITALIA and FREDA are the companies of the Group deputed to the processing/workmanship of the materials. Thanks to their productive units, to the technical staff and to the continuous investiment in high technology machinery, the stone materials are trasformed assuring the deliveries in every part of the world, even with reduced delivery terms, from the small size job to the large project supply. With the combined approach of the Campolonghi Group's companies, clients have been offered a comprensive "shop window" to the world's materials, in an environment of production excellence.