The Montreal Protocol of 16 September 1987, that is often cited in connection with climate protection, laid the foundation for today's refrigerator and freezer demanufacturing process. Under the terms of the Protocol, the signatory states agreed to drastic reductions in the levels of the CFC 'climate killers'.
Since then, nearly all of the world's nations have signed the Montreal Protocol on the control and limitation of substances that deplete the ozone layer, and have ratified the amendments to the Protocol agreed at the meetings in London, Copenhagen and Vienna. In addition, the United Nations has, through its Environmental Programme (UNEP), convened a committee of experts which meets annually to discuss changes in the ozone layer and the effects and implications for the earth.