Sustainability Report 2022 (English version)
Sustainability Report 2021 (English version)
Sustainability Report 2020 (English version)
Sustainability Report 2019 (English version)
Sustainability Report 2018 (English version)
Sustainability Report 2018 (German version)
Comparison CCF – PCF (English version)
Comparison CCF – PCF (German version)
History Highlights Environment 2015 (English version)
History Highlights Environment 2015 (German version)
Statement Sustainability 2013+2015 (English version)
Statement Sustainability 2013 & 2015 (German version)
Biologische Stickstoff-Elimination, 24.10.2011 (German version)