This work package focuses on product life cycle and production system lifecycle. This work packageÃ‚Â describes these life cycles and then to consider the integration of productÃ‚Â and production system life cycles. These aim at improving sustainability of productsÃ‚Â and production systems. The main focus in this work package is limited to product life cycles, especially productÃ‚Â upgrading and post-use phases, e.g. reusing, remanufacturing and recycling.