About SPI

Engineering. Natural Stone. International Trade.

SPI TRADING & ENGINEERING SA is a Swiss company specializing in engineering solutions, industrial renovation, natural stone manufacturing, and the international trade of premium construction materials.

The company brings together engineering expertise, project coordination, procurement, manufacturing, and supply chain management, delivering integrated solutions for commercial, industrial, and architectural projects. Through an established network of manufacturing partners and leading European quarries, SPI provides a complete value chain—from raw material sourcing and production to international logistics and turnkey project support.

Beyond engineering and material supply, SPI is built on the principles of responsible business, operational excellence, and long-term partnerships. Every project is approached with precision, transparency, and a commitment to delivering sustainable value.

We believe that successful projects are built on trust, technical expertise, and reliable collaboration. By combining Swiss business standards with strategic thinking and efficient project management, SPI creates solutions that support the long-term success of clients, partners, and stakeholders.

Our philosophy is founded on professionalism, responsibility, and continuous development. Through quality, innovation, and strong international relationships, SPI Trading & Engineering AG delivers integrated solutions that create lasting value in every project we undertake.

gray concrete wall under white clouds during daytime

Strategic Partners

SPI Trading & Engineering AG collaborates with leading Swiss companies in engineering, construction, industrial services, and project management. Our partner network brings together decades of technical expertise, innovation, and operational excellence, enabling us to deliver integrated solutions while maintaining the highest Swiss standards of quality, reliability, and professionalism.

Baiutti SA

Swiss construction company specializing in civil engineering, industrial projects, structural works, excavation, concrete construction, and infrastructure support with a strong focus on quality and technical precision.

Website:
https://baiutti.ch

Implenia AG

Switzerland's leading construction and real estate services company, specializing in complex engineering projects, industrial construction, infrastructure, tunneling, and building development across Europe.

Website:
https://implenia.com

Antiglio SA

Specialists in earthworks, demolition, recycling, excavation, and environmental engineering solutions, delivering sustainable construction support services throughout Switzerland.

Website:
https://www.antiglio.ch

Marti SA

One of Switzerland's most experienced engineering and construction groups, providing expertise in underground works, industrial construction, structural engineering, civil works, and complex technical projects.

Website:
https://www.martisa.ch

Frutiger AG

A leading Swiss engineering and construction company recognized for project development, industrial facilities, commercial buildings, renovation, sustainable construction, and integrated project management.

Website:
https://www.frutiger.com

Losinger Marazzi AG

A Swiss leader in sustainable construction and real estate development, delivering innovative commercial, industrial, healthcare, educational, and mixed-use projects through integrated engineering solutions.

Website:
https://www.losinger-marazzi.ch