Montreal Protocol, 49 nations agreed to reduce production of the 8 most widely used CFCs. CFC use became more likely.For projects in countries eligiblefor its assistance. Montreal Protocol have agreed to. Minnesota state agencies are working together to reduce greenhouse gas emissions that cause climate change. Although international agreements have banned CFC production, CFCs are long lived and will remain in the stratosphere for several more decades. , CFC-113a, CFC-. 60. CFCs chlorine components reportedly destroy ozone in the upper atmosphere.