DescriptionA French cement company based in Bournezeau (Vendée), founded in 2014, producing 0% clinker cements through cold activation of co-products such as slag and flash-calcined clays. Its H-UKR cement and related products reduce emissions by up to around 80% compared with Portland cement; the life cycle inventory updated in 2025 places H-UKR at 198 kg CO2eq per tonne in France. In 2026 it obtained the world's first technical assessment (ATec) for a clinker-free cement in superstructure applications. It operates two plants in Bournezeau, including the H2 vertical tower.