Contact · Contact

Get in Touch

Please contact us

For any further questions about on-site audits, verification reports, license decisions, or how you can begin implementing the 4C Code of Conduct, please get in touch!

How to find us

4C Services GmbH
(former CAS)
Bonner Talweg 59
53113 Bonn, Germany

Tel: +49 228 184 284 0

By public transportation:

From Bonn Central Station take Tram Line 61 or 62 in direction of “Dottendorf”. Leave the tram at the third stop with the name “Weberstraße” and follow the street “Bonner Talweg” for 120 m. 4C Services is located at house number 59 on the left side of the road.


Two parking lots are available for our customers in front of the office building at Bonner Talweg 59, 53113 Bonn.