International agreement to limit CFC production ; stratospheric ozone. The Montreal Protocol, established in 1987, was created to limit substances that deplete the ozone layer, particularly CFCs.Delegates from rich and poor nations approved an agreement today intended to protect the earth's fragile ozone shield. Production of CFCs, halons, and HCFCs is projected forward at the maximum allowed under the. Protocol. Production capacity cap. • The U.S. issues an "Advance Notice of Proposed Rulemaking" outlining a production capacity cap to limit total CFC uses. 1981.