This deliverable provides an overview of the materials made and supplied by Yparex. Part of WP6 work is focused on the development of an encapsulant that works with perovskite cell technology and is processable at low temperatures. Yparex develops a thermoplastic polyolefin encapsulant, processable at lower temperatures. Processing at lower temperatures can be preferable for the stability of perovskite-based cells during lamination. Future work will focus on the continuous improvement of encapsulants based on the feedback loops with the PEPPERONI partners including adjustments in either the recipe or processing parameters.