United Nations Environment Programme
This page brings together a range of materials intended to support customs and enforcement officers in their work to implement national licensing systems for ozone depleting substances under the Montreal Protocol, to detect and prevent illegal trade in these chemicals, and to facilitate the legal trade.
On these pages you can find training materials and information resources specifically produced for customs and enforcement officers by the OzonAction Compliance Assistance Programme. Many of these are produced in cooperation with our partner organisations. You will also find a number of additional resources relevant to issues of trade in ozone depleting substances. Links to useful external sources, information tools and websites are also provided. You are encouraged you to consult this page regularly for the latest updates.