Gneiss Calanca, Tiles, Slabs, Blocks
Grey - Granite
The pioneer was, however, Alfredo"s father, Giovanni Polti, that since 1920 he engaged in the extraction and processing of Gneiss Calanca in the quarries of Arvigo, where in 1960 Alfredo Polti moved the entire production. The extraction of the stone from its own quarries and its processing into new modern laboratories and thus became two phases of a single integrated process.
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