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Recently, the U.
S.
Environmental Protection Agency (EPA) enacted regulations banning the use of certain chemical substances that can cause climate change and promoting the use of safer and less climate-impacting alternatives
.
The action responds to President Ma Obama's Climate Action Plan, which aims to reduce HFC emissions
.
Regulated HFCs and mixtures containing HFCs are generally used
in sprays, blowing agents, automotive air conditioners, retail food refrigeration and vending machines.
To protect the climate and the ozone layer, the EPA has approved several new alternatives
.
By 2025, greenhouse gas emissions
equivalent to 54 million ~ 64 million tons of carbon dioxide can be reduced.
According to forecasts, U.
S.
HFC emissions are expected to double today by 2020 and triple
by 2030.
(Pang Xiaohua)