Holler Porfidi is a successful company operating in the porphyry processing sector. In 1978, Gino Holler had the idea of manufacturing porphyry products at the highest level, using exclusively the materials coming from his own quarry in Albiano, Trento. Through the years, Holler Porfidi has expanded its activities by acquiring other quarries in Laives, Bolzano and Puerto Madrin, Argentina, to offer its clients a wider varity of products