Every year Progalvano projects and produces several custom-made barrels and prototypes. By starting from the needs expressed by our customers, we often design variations of rotors that can be adapted to similar customers’ demands from different markets around the world. So that, thanks to further tests, improvements and standardisations, we can offer our so called Special Barrels: rotors inspired by our customers and refined by our technical experience, as in a mutual exchange for value.

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