Saint-Gobain is a France-based multinational and a world leader in light and sustainable construction. It designs, manufactures and distributes materials and solutions for construction, mobility and industry, including glass, insulation, plaster and high-performance materials. The group has committed to reaching net-zero carbon emissions by 2050.

Holcim is a Switzerland-based global leader in innovative and sustainable building solutions, including cement, aggregates, ready-mix concrete and roofing systems. It operates across some 60 markets, serving construction and infrastructure worldwide. Holcim is a frontrunner in decarbonising building materials through low-carbon products, circular construction and carbon-capture initiatives.

CRH is an Ireland-headquartered, US-listed global building-materials company and a leading provider of solutions for the built environment. It supplies aggregates, cement, ready-mixed concrete, asphalt and construction products across North America and Europe, focusing on sustainable construction, infrastructure resilience and reducing the carbon footprint of its materials.

Heidelberg Materials is a Germany-based multinational and one of the world’s largest producers of cement, aggregates, ready-mixed concrete and asphalt. It operates in around 50 countries with a strong focus on carbon-reduction technologies such as carbon capture, utilisation and storage, positioning itself as a pioneer of low-carbon and circular building materials.