UN Environment Programme OzonAction, in cooperation with the World Customs Organization and the Ozone Secretariat, is launching the fifth edition of the ECA Montreal Protocol Award for Customs and Enforcement Officers for the period 2019-2020. The award recognizes the crucial role of customs & enforcement officers in implementing trade restrictions and bans for hydrochlorofluorocarbons (HCFCs) and hydrofluorocarbons (HFCs). Both groups of chemicals, which are controlled under the Montreal Protocol on Substances that Deplete the Ozone Layer, are widely used as refrigerants and foam blowing agents in the refrigeration, air conditioning and foam blowing sectors.