Stefano Costagli

Ciments Calcia SA is engaged in the cement industry. It includes gray and white cements, lime, masonry binders, road binders, and special products. The company was founded in 1881 and is headquartered in Guerville, France.

Grant Thornton SA engages in the provision of accounting and consulting services. It offers solutions in audit, financial advisory, tax, international business advisory, and outsourcing. The company was founded in 1963 and is headquartered in Neuilly-sur-Seine, France.

CRH France operates as an investment holding company. The company is headquartered in Levallois-Perret, France.

Part of Heidelberg Materials AG, Devnya Cement AD is a leading cement producer in Bulgaria. The company is based in Devnya, Bulgaria and is known for its wide range of cement products, including innovative solutions such as drainage concrete and hydraulic binding agents for roads. Devnya Cement is also a partner of a local school in a joint project with the municipality of Devnya and businesses in the region to support vocational education. The Bulgarian company is part of Heidelberg Cement Group, one of the world's largest integrated producers of building materials with a presence in over 50 countries and more than 145 years of experience.

Heidelberg Cement SA is a Turkish global building materials company that produces cement, clinker, secondary cementitious materials, solid alternative fuels, other building materials, and additives. The private company has strategically located trading offices around the world, including in Turkey. The company is based in Heidelberg, Germany. Heidelberg Cement is committed to reducing CO2 emissions and improving the characteristics of cement and concrete. The company has a strong focus on research and development, with five areas of focus: products and applications, cement production, aggregates, ready-mixed concrete, and development of cements and concretes with improved carbon footprint. Heidelberg Cement has a strong presence in Turkey through its joint venture with Sabanci Holding, Akçansa, which is the leading producer of cement and ready-mixed clinker in Turkey. Akçansa has implemented efficient CSR programs and campaigns dedicated to protecting the environment through permanent waste co-processing programs. The company is also committed to biodiversity management and has launched several social responsibility projects, including the "My Neighborhood" project for children.

Teralta Ciment Reunion SA engages in the manufacturing of cement. The company is headquartered in Le Port, France.

Devnya Business Center is a private company that manufactures concrete products. The company is based in Devnya, Bulgaria.