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China Actively Implements Ozone Layer Protection Protocol
2017/11/25
China has always attached great importance to the protection of the ozone layer since the signing of the Montreal Protocol in 1991. In 2007, China completed the phase-out of chlorofluorocarbons (CFCs) and halons, two and a half years ahead of the Montreal Protocol schedule. On January 1, 2010, China completed the phase-out of carbon tetrachloride and methyl chloroform. China’s phase -out of ozone depleting substances (ODS) production and consumption accounted for 69.9% and 44.8% of the developing countries, respectively, making an important contribution to global ozone protection.
 
The phase-out of CFCs was mainly carried out in the refrigerator industry. The refrigerator industry uses isobutane (R600a) to substitute CFC -12, and cyclopentane instead of CFC-11. The substitution not only eliminated CFCs, but also greatly reduced hydrochlorofluorocarbons (HCFCs) such as HCFC-141b and hydrofluorocarbons (HFCs) with a high global warming potential (GWP) such as R134a, achieving dual benefits of ozone layer protection and mitigation of climate change.
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