Un lavoro ben eseguito e in breve tempo per un risultato davvero notevole

Ongaro & Co SA is a family company with a long history in stone masonry that, starting in 1930, grew over the course of three generations into one of the most successful stone quarrying and fabrication operations in Switzerland. Located in Cresciano, Ongaro & Co SA traditionally supplies from its own quarries the homonymous and precious Gneiss. Since 2011 the company has also been extracting the elegant Bodio Nero. Part of the company collection and available upon request, we also supply and work Gneiss extracted from Andeer, Calanca, Iragna, Maggia and Onsernone. A wide choice of colors and finishes are offered to meet the requirements of the customers. Thanks to a craftsmanship consolidated over many decades and the use of increasingly advanced machinery and equipment, Ongaro & Co SA aims at an ongoing progress in the development of new projects, innovative product lines and services. With the spirit of constant evolution the company transforms basic raw materials into unique products, thus renewing the traditional Swiss granite industry. Products: • Raw material • Masonry • Road and highway construction • Garden features • Urban furniture • Massive stone constructions • Custom stone elements • Flooring • Stairs • Elements in pre-stressed Gneiss • Indoor Furniture • Art • Funerary elements

wunderbarer Granittisch, sehr schöne Arbeit. Wir haben viel Freude damit. Die Beratung und dann auch die Lieferung war sehr gut. Wir bedanken uns bei der Firma Gottardi. Johanna Sciancalepore, Gerra-Gambarogno

The company Alfredo Polti SA, a typical family business, is active in the industrial sector of natural stone. It was founded by Alfredo Polti in 1950, with the launch, in Grono, of a workshop for the processing of the Gneiss Calanca. The pioneer was however Alfredo’s father, Giovanni Polti, who in 1920 was involved in the extraction and processing of the Gneiss Calanca in the quarries of Arvigo, where in 1960 Alfredo Polti transferred the entire production. The extraction of the stone from its own quarries and its elaboration in new and modern laboratories thus became two integrated phases of a single production process. The Gneiss Calanca extracted from the quarries Alfredo Polti SA is treated in modern laboratories, where expert stonemasons transform it manually or mechanically, thanks to the help of the most modern machines for working with stone. Moreover, part of the material is put on the market in the raw state, in the form of blocks, irregular or quadrangular slabs, or masonry stones. The available offer is vast and includes products for: • the substructure • the superstructure • the construction and furnishing of parks, gardens, squares and cemeteries • the creation of artifacts able to satisfy the most demanding dictates of modern architecture of exteriors and interiors. About 90% of production is destined for the Swiss domestic market. The remainder is exported, in particular to Germany, Italy, Austria and France. In many cities of these countries you can admire important works realized with the Gneiss Calanca by Alfredo Polti SA produced in Arvigo. After the death of the founder Alfredo Polti, the company was taken over by: Giovanni Polti, who takes care of the extraction and production processes and Vania Polti Ambrosini, who guarantees administrative management. Since 2013, Alfredo Polti SA remains the only active quarry in the Calanca valley. Most of Alfredo Polti SA's collaborators have many years of service in the company, synonymous with experience and professionalism at the service of customers. Since May 2007 the company is ISO 9001 certified.

Materiali da tutto il mondo: marmo,granito,parquet e grès. Molto professionali e con esperienza pluriennale (da 100anni a Locarno). Prezzi competitivi. Hanno anche mobili e accessori in pietra moderni fantastici

Sempre disponibili, anche per piccoli lavori urgenti, operai qualificati, molto attrezzato, lavori di qualità e con pulizia.

Molto soddisfatta del lavoro svolto! Titolare e operai molto professionali, puliti, ordinati e gentilissimi! Sono riusciti a trasformare un mio grande muro (ORRENDO) in un’opera ordinata, precisa e VERDE!!! Da 15 anni cercavo una soluzione e provato di tutto... finalmente trovata soluzione pratica, pulita ed ESTETICA! Grazia mille!