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.

Nous avons sollicité il y a quelques mois la maison Alpes Jardins Tirozzini et toutes les interventions que nous avons demandées ont été exécutées dans les délais prévus et de manière précise et efficace. Une des forces de cette maison est la diversité de ses compétences : de la rénovation de la pelouse ; de la conception des bacs à fleurs ; du nettoyage du pavement de la cours d'accès au jardin. Notre satisfaction est totale et nous avons en conséquence décidé de rester les clients de cette maison. JPB

Wir sind sehr zufrieden mit der Dämmung unserer Heizung und Sanitären- Anlagen. Freundliche und Motivierte Mitarbeiter. Empfehlenswert

Civil Engineering Firm in Ticino AR&PA Engineering , based in Pregassona, offers high-quality civil engineering services. The firm's professionals specialize in various fields and provide tailored solutions to meet the needs of private clients, companies, and public institutions. View our portfolio and contact us for more information. Areas of Expertise In the field of engineering, we support clients with design services and construction management across all contexts. Specifically in the following areas: • Construction – for private clients and public entities (commercial, industrial, banking institutions, exhibition spaces, sports facilities…) • Structures in reinforced concrete, prestressed concrete, composite structures, and steel (pedestrian and cycle bridges, canopies, road and railway underpasses, viaducts, bridges, centering structures…) • Civil engineering works in superstructure and substructure , roadworks, infrastructure for distribution companies, urban furnishings, drainage systems, pressurized pipelines • Special geotechnical works – piles, micropiles, anchored and nailed walls, Berlin walls, sheet piling, buttressed retaining walls, consolidation injections – for excavations, foundations, and reinforcements (slopes, roads, lake shores) and below-ground works • Structural renovation and restoration of buildings of all types • Special structures such as pontoons and moorings for tourist ports, submerged and floating structures, tensile structures, cable networks, foundations for vibrating machinery, tuned mass damping systems (TMD) Technical Assessments and Safety The firm's engineers also handle all aspects related to the safety and preservation of structures. They conduct technical assessments for evaluating structures, buildings, and roadworks. They specialize in environmental investigations, for example in cases of ground subsidence, flooding, or fire damage. Structural Analysis Among the specialties of the firm, led by engineers Paronesso and Artari, are analyses of: • Static and dynamic structural behavior, both linear and nonlinear • Modal analysis in real and complex domains • Seismic and geotechnical analysis • Structural instability (buckling) • Three-dimensional slope stability • Impact and collision analysis • Vibrations induced by pedestrian, vehicular, and railway traffic • Floating structures To learn more in detail, contact our office via the form or by email. Software Development AR&PA Engineering designs and develops specialized software for the study of: • Nonlinear static interaction between foundation piles for pile group calculations • Sea state modeling for determining wave loads on floating structures • Static and dynamic behavior of moorings composed of catenary chains and dead weights • Dynamic interaction between railway bridges and trains • Dynamic interaction between floating platforms and fluid • Dynamic interaction between structures (e.g., dams) and infinite media (soil, fluid contained in reservoirs)

Since April 2025, Aregger Elektro Baden AG has stood for innovative and reliable electrical solutions in the Baden area and beyond. As the youngest member of the Aregger Group, the company brings a breath of fresh air to the electrical industry without compromising on proven quality. Under the management of Fabian Aregger, the team combines many years of experience with future-orientated technology. Whether new construction, renovation or maintenance - we offer comprehensive services in the areas of electrical installations, building automation and e-mobility. We focus on personalised advice, efficient implementation and sustainable solutions. With our new location at Brown Boveri Platz in Baden, we are centrally accessible and ready to realise exciting projects together with you. Put your trust in our expertise, commitment and innovative spirit - put your trust in Aregger Elektro Baden AG. Translated with DeepL.com (free version)

Assante Private Security , is based between Bulle and Gstaad, offers high-quality security services tailored to your needs. Our expertise and commitment ensure your peace of mind and safety. Our Services • Armed Service: Qualified agents for enhanced protection. • Accompaniment: Personal security during travel. • Valuable Transport: Securing valuable goods in transit. • Close Protection: Discreet and effective protection in high-risk environments. • Order Managment : Maintaining order for public or private events. • Event Security: Concerts, Exhibitions, Private Parties: Security for events of all sizes, access management, and site monitoring. • Guarding and Surveillance: Industrial sites, construction sites, villas: Protection against theft, vandalism, and intrusions, with regular patrols and technological surveillance. • Traffic Management: Traffic regulation for events or specific situations. Assante Private Security provides tailor-made security solutions with qualified professionals. Contact us to ensure your safety.