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Marco Naber has extensive experience in the business sector, serving as the owner of SIEVERS-GROUP since May 1989 and as a trainer at NUTBASER GmbH since July 2017. Additionally, Marco Naber has been the managing director at Dr. jur. Sasse und Naber Nachf. Unternehmensberatung GmbH since March 1976. Marco Naber's educational background includes studies at Universität Osnabrück from 1983 to 1984.