Mexico has ceased all production of ozone-depleting chlorofluorocarbons (CFCs) 4 years ahead of the deadline defined in the 1987 Montreal Protocol. Figuring amongst the 189 nations to date to ratify the protocol on ozone-depleting gases containing chlorine and bromine, Mexico's closure of its Quimobasicos plant, formerly a world chief producer of CFCs exporting to Latin America and Asia, will result in a 12% decrease in global CFC production and will reduce Latin American output by 60%, according to the Minister for the Environment Jose Luis Luege.