CRITT-MDTS is a research and expertise center specializing in materials, deposits and surface treatments. With two location, based in Charleville-Mézières (08) and Nogent (52), it offers comprehensive services, ranging from standardized services to the implementation of R&D programs. We can notably quote the advice for the choice of a material, a deposit or a treatment, the expertise to determine the causes of an anomaly or a dysfunction (rupture, wear, corrosion ...), the controls chemical analysis and tests, on the finished piece or piece. We also has recognized competence at the European level in the characterization of orthopedic implants. With a team of fifty engineers and technicians, very comprehensive means of testing and analysis, the CRITT-MDTS achieves 85% of its activity directly with the industrialists, and 15% within the framework of programs Collaborative R & D in partnership with other public or private laboratories.