What action resulted from a 1987 meeting reducing the amount of CFCs released by participating countries?

In 1987 a meeting was held in Montreal where twenty-four representatives from 24 nations participated. They agreed and signed "Montreal Protocol on Substances" which represented an agreement to reduce the production and usage of CFCs.

Chlorofluorocarbons (CFCs) are nontoxic, nonflammable chemicals containing particles of carbon, chlorine, and fluorine. They are utilized as a part of the produce of airborne splashes, blowing operators for froths and pressing materials, as solvents, and as refrigerants. They cause the reduction or thinness of Ozone layer.