Heidelberg Materials is a German multinational building materials company headquartered in Heidelberg, Germany. Formerly known as HeidelbergCement AG, the company has rebranded as Heidelberg Materials in September 2022. It is a DAX corporation and stands as one of the world's largest building materials companies. On 1 July 2016, HeidelbergCement AG completed the acquisition of a 45% shareholding in Italcementi. This acquisition made HeidelbergCement the number one producer of construction aggregates, the second-largest in cement and the third-largest in ready-mixed concrete worldwide. In the 2020 Forbes Global 2000, HeidelbergCement was ranked as the 678th -largest public company in the world. The enlarged group has activities in around 60 countries with 57,000 employees working at 3,000 production sites. HeidelbergCement operates 139 cement plants with an annual cement capacity of 176 million tonnes, more than 1,500 ready-mixed concrete production sites, and over 600 aggregates quarries. Wikipedia