The GRETh has brought together, for nearly 40 years, a community of French and international industrial companies and research laboratories whose activities are mainly focused on heat exchangers and thermal systems, such as : ◾ Study, design and manufacturing of heat exchangers ◾ Design and manufacturing of thermodynamic systems ◾ Industrial and building engineering studies ◾ Research in academic and industrial laboratories ◾ R&D in the fields of Aerospace, Aeronautics and Automotive The GRETh has been working independently and autonomoulsy for the past ten years with it's current associative format, which was created in 1994 under the impetus of the CEA and ADEME. The GRETh has thus been able to perpetuate its historical expertise and now has more than 100 members. In order to accompany its network actors, the GRETh has set up a strategy of technical, technological and scientific support to its members through different actions, namely : 🎓 Scientific and technological watch 📝 Technical reports writing 📖 Provision of documents and exclusive works (E.Book of GRETh) 💾 Distribution of an exclusive heat exchangers calculation and sizing software (EchTherm software) 🤝 Connection between innovation actors, from the GRETh network and outside the network 🎤 Organization of an annual technical & scientific congress (Journées Techniques du GRETh) 📚 Realization of trainings on heat exchangers and thermal systems (QUALIOPI certification) The GRETh thus carries out missions of collective interest made possible by the pooling of industrial and academic memberships. This approach is complemented by technical and scientific support within the membership contract framework, regarding specific and brief needs, or through specific services within the framework of bilateral contracts (NDA).