Clients and suppliers of the CSTB can report their satisfaction or dissatisfaction (complaint, call) to the CSTB.
Cases of dissatisfaction may be reported directly to your CSTB contact or to the Quality and Ethics Department by post or email to qualite@cstb.fr.
The procedure for responding to cases of dissatisfaction may be received on request from the Quality and Ethics Department: qualite@cstb.fr