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Contact
Dr. F. Krantz
Rheinisches Mineralien-Kontor
GmbH & Co. KG
Fraunhofertraße 7
53121 Bonn
Phone: +49 (0) 228 / 988 65-0
Fax: +49 (0) 228 / 988 65-20
Opening hours
Visit our retail store:
Monday - Friday 07.30 - 16.30
