The EU Regulation n. 2023/857 of 19 April 2023 establishes: a) reduction of allowed quota of F-Fas; b) rules/obligations more strict for the Member States. In particular, this regulations recognizes that: The Parties to the Paris Agreement have agreed to hold the increase in the global average temperature well below 2 °C above pre-industrial levels and to pursue efforts to limit the temperature increase to 1,5 °C above pre-industrial levels; European Union has in place a regulatory framework to achieve the 2030 greenhouse gas emission reduction target of at least 40 % that was endorsed, before the entry into force of the Paris Agreement, by the European Council in 2014;…