Note: Emission limits do not include emissions by international aviation and shipping, but are in addition to the industrial gases, chlorofluorocarbons, or CFCs, which are dealt with under the 1987 Montreal Protocol
Example: China, India and other developing countries were not included in any numerical limitation of the Protocol, because they were not main contributors to the GHG in the pre-treaty industrialization period. China has since become the largest GHG emitter;