To prevent the deterioration of the ozone layer and the exacerbation of the greenhouse effect, the countries of the world were invited by the United Nations to sign a protocol in Montreal in 1987 agreeing to fix their consumption of fluorocarbon compounds at 1986 levels by July 1, 1989, and to completely ban the use of fluorocarbon compounds by the year 2000.
一九八七年，聯合國為了防止地球的臭氧層再遭破壞，以及溫室效應再惡化，邀集世界各國簽署了蒙特婁公約，同意於一九八九年七月一日起，所有締約國的氟氯碳化合物消費量，固定在一九八六年的水準；西元二○○○年時，全面禁用氟氯碳化合物。