CAILLAU provides the nuclear industry with its know-how in fastening-tightening-assembly-hanging systems dedicated to the supporting and integration of suspended piping. These solutions are equipped with additional antiseismic functions (controlled loads, springs).CAILLAU's designs (95 people in R&D) for fluid transfer functions offer significant savings in terms of mass, volume, fitting and quality, with integrated solutions that are even more useful during maintenance operations. The cost savings are significant if we consider Total Cost Ownership (product and process).The expertise in the automotive and aerospace markets (80% export), allows CAILLAU (90M€ of sales, 600 people) to support OEMs with high quality and logistic service rates worldwide. Innovation in the field of e-mobility (EV, HEV, H2) as well as diversification in renewable energies represent €35 million of additional revenues.These areas of excellence strike a responsive chord in the highly changing nuclear markets.