AGH University of Science and Technology
Cumulus
Gdańskie Melioracje
General Directorate of Roads and Highways (GDDKiA)
Road and Bridge Research Institute (IBDiM)
Forest Research Institute
Institute for Land Reclamation and Grassland Farming (IMUZ)
Institute of Plant Protection (IOR)
Interia
Onet
State Forests National Forest Holding
Polish Geological Institute (PIG)
Cracov University of Technology
West Pomeranian University of Technology, Szczecin
Warsaw University of Life Sciences (SGGW)
University of Łódź
Poznań University of Life Sciences
University of Agriculture in Kraków
University of Silesia
University of Technology and Life Sciences
Płock City Hall
Zabrze City Hall
District Government of Żywiec
Z. Ch. POLICE S.A.
ZDiT Łódź
ZDiUM Wrocław
ZDiZ Gdańsk
ZDM Legnica
ZDM Poznań
ZIKiT Kraków
ZOM Warszawa