This document is an invitation to submit a tender to carry out a Nordic survey on current regulations and practices for end-of-life treatment of Hydrofluoroolefins, HFOs, which are synthetic substitutes to HFC refrigerants with high global warming potentials, and to propose options for the safe recovery, collection and treatment of HFOs in the Nordic countries. A contracting partner will be chosen according to the criteria outlined in this document. Tenders will be evaluated against the relevant criteria described in this document.