CANBERRA Industries, Inc.
Uniwersytet SlaskiSlaskie, Poland
Polish Academy of SciencesPL
Oil-Dri Corp. of America
Preemadonna, Inc.California, United States
Spartan Chemical Company, Inc.Ohio, United States
Weiman Products LLCIllinois, United States
Krakowska Fabryka Kabli SA
Pomorski Uniwersytet Medyczny W SzczeciniePL
Nice-Pak Products, Inc.New York, United States
Jan Kochanowski University In KielcePL
Adam Mickiewicz UniversityWielkopolskie, Poland