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https://usitat.com/ USiTaT | Upskilling Sustainibility in Travel and Tourism in travel upskilling sustainibility tourism https://www.xing.com/profile/Frank_Hofmann051667 Frank Hofmann - Sustainibility Manager - Physik Instrumente GmbH & Co. KG | XING Frank Hofmann, Karlsruhe Professional experience, contact details, portfolio, etc.: Find out more or get in touch with Frank Hofmann on XING. frank hofmann physik instrumente sustainibility manager gmbh