Sandra Wippermann Return to Directory Company Holler Research GmbH Mailing Address Beckhausstrass 168, Bielefeld, NRW 33611 GERMANY Phone Number +49 521 821 60 Languages English, German, Spanish Specialties Background Investigations, Commercial Investigations, Due Diligence, Intellectual Property Investigations Member Status Active Email info@holler-research.com Website http://www.holler-research.com