This is the best summary I could come up with:

Emissions of two of the most potent greenhouse gases have substantially increased in China over the last decade, a study has found.

Perfluorocarbons are used in the manufacturing processes for flat-panel TVs and semiconductors, or as by-products from aluminium smelting.

A research team led by Minde An at Massachusetts Institute of Technology examined the emissions of two specific perfluorocarbons, tetrafluoromethane and hexafluoroethane, both with atmospheric lifetimes of 50,000 and 10,000 years respectively.

China is the world’s largest producer and exporter of aluminium, with the country’s production reaching a record-high output of 41.5m tonnes last year.

The authors suggest that with technological innovation and incorporation of the aluminium industry into the carbon market, or a national carbon trading scheme allowing emitters to buy or sell emission credits, it is possible that these rising levels could be reduced.

While being a significant source of CO2 emissions, aluminium production is also essential in the energy transition from fossil fuels to cleaner renewable energy sources by helping produce many low-carbon technologies such as solar panels, electric vehicles and wind turbines.

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