International agreement to limit CFC production ; stratospheric ozone. Under the agreement reached at a United Nationssponsored conference, participating countries will freeze their production of.In 1987, 56 countries agreed under what became known as the Montreal Protocol to cut CFC production and use in half. In the space provided, write the letter of the term or phrase that best matches the description. 1. International agreement to limit. International agreement to limit CFC production. Furthermore, the industry should agree to a global cap on HFC production and emissions. So far, only the United States and Mexico have approved the treaty.