Recycling is essential for achieving a sustainable supply of resources, for instance critical raw materials, for manufacturing electronics, batteries and vehicles using new technologies. The lack of information is a major obstacle to the circular use of materials. The goal of the workshop is to elaborate, together with policy makers, authorities and industry, strategies for a robust worldwide knowledge base on secondary raw materials. Achievements, lessons and best practices from the successful European projects ProSUM and ORAMA are presented. Join us to discuss the future of data on secondary raw materials!