Sun Guolong, general manager of Baogang Group, said carbon capture utilization and storage will play a critical and evolving role in China's energy transition.

BMW and HBIS will also jointly carry out research and development of carbon capture.

But to cut pollution, China has reduced steel production, leading to the closure of many plants.

Steel, magnesium and its products, and coal are among the major exported commodities.

In terms of improvement in rankings, China's Ansteel Group Corp made the highest jump across 183 places to 217.

China reduced as much air pollution in seven years as the United States did in three decades.

China is a large consumer of iron ore.

Compared with wet quenching, Mi said the new technique has economic and environmental benefits.