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For any further questions about on-site audits, audit reports, certificate decisions, or how you can begin implementing the 4C Code of Conduct, please get in touch: info@4c-services.org.

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Use our Stakeholder Feedback Form to help us improve our system or to report any kind of violation of the 4C System. We appreciate the time you take.

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How to find us:

4C Services GmbH
Hohenzollernring 72
50672 Köln, Germany

Tel: +49 221 508020 50
Email: info@4c-services.org

VAT ID: DE 309 670 148