The Bianco Zandobbio marble, or Zandobbio dolomite, originates in the area where Valli Granulati operates.

The deposits can be seen in the hilly area of the lower Val Cavallina, within the municipality of Zandobbio, (hence the name), and in the neighbouring areas, such as Trescore Balneario.

It is mainly used for the following purposes: plasters, premixed products, prefabricated buildings, flooring, gardening, floriculture, agriculture, animal husbandry, ornithology, detergents, wall cladding and restorations.