2021
- Conversion to 100% post-industrial recycling basis (exeption: special varieties)
2013
- Installation of a modern surface inspection system
- Installation of the new compressed air compressor
2012
- Installation of a modern gas boiler and shutting down of the thermal waste utilization system as well as of the existing gas and oil boiler systems.
- Certification in accordance with FSC and PEFC Chain of Custody
2011
- Installation of a new process control system for raw material preparation
2010
- Installation of a new residual materials treatment plant
2007
- Installation of a new process control system for the paper machine
2004
- Installation of a slit-sorting system (commissioning, III. stage)
2003
- Replacing of the steam-heated drying hood by a gas-heated high-temperature hood (up to 300 °C)
2002
- Replacing of the glazing cylinder with a 5 m diameter one
- Installation of a new mechanical wastewater treatment system
2001
- Construction of a new warehouse for finished goods, fibrous raw materials and machine parts
1998
- General overhauling of PM I and the pyrolysis system
- Participation in the Eco-Management and Audit Scheme of the European Union for the first time
1994
- Extension of the finished goods store
1985
- Commissioning of the waste heat utilization system
1979
- Shutting down of the cellulose factory
1975
- Shutting down and demolition of the two old paper machines
1970
- Construction of the present paper machine with 470 cm working width
1957
- Shutting down of the oldest paper machine
1936
- Renovation of the cellulose factory
1927
- Construction of a further paper machine
1895
- Setting up of a cellulose and paper factory with 2 paper machines
1893
- Purchase of the site of a former smelting works in Kirchhundem-Hofolpe
1874
- Founding of the firm of Gebr. Grünewald by the brothers Caspar and Franz Grünewald