Celsa is a company founded in 1967 in Castellbisbal (Barcelona) and has become the leading European producer of low-emission circular steel, it also recycles scrap metal to produce steel in electric arc furnaces. The company is made up of different business groups with steel mills, rolling mills and recycling plants.

Celsa trusts Anthesis to develop its sustainability reports. In the 2024 edition, a very clean graphic style has been worked on, aligned with its corporate image and its commitment to reducing its environmental impact. Visually the document is dominated by blue color, and many icons and infographics have been incorporated to highlight the data and make them easy to interpret. The project includes the report in Spanish and English. Graphic composition has also been done in a horizontal format to unify the printed and digital versions of the report.