The companies associated to the Granite Cluster classify  according to the activity that develop in four big groups. These are: manufacturers, extractors, installers and machinery.

The manufacturers transform the block of stone brought of quarry in products for his back commercialisation.
The extractors, explode quarries and export the blocks of granite obtained. Also they manufacture and they sell all class of arid.
The installers elaborate and place all type of works in granites, marbles and derivative as they are countertops, stairs, facades, funerary art,…
The machinery commissions  to do arrive the stone to the corresponding constructive project and place it.