Under the aegis of the Groupe Français d'études et d'applications des Polymères (GFP) and the Society of Polymer Science, Japan (SPSJ), the two polymer science learned societies of France and Japan respectively, this symposium was a great opportunity for the French and Japanese delegations of eminent guest scientists and participants to meet and discuss future collaborations. Renowned French and Japanese scientists presented the results of their research in the field of polymer science in the context of crucial societal questions related to health, energy, protection of human and the environment or high performance materials, to name a few. Beyond the remarkable scientific discussions that ensued, this symposium reached its objective to facilitate the establishment of friendly and professional ties between French and Japanese researchers. The Japanese delegation was notably welcomed by the Occitanie Region and discover some of the charms of its cultural heritage as well as its high tech industry-driven development strategy. The success of this symposium, made possible thanks to the support of institutional partners such as the Institut Carnot Chimie Balard Cirimat,