Guiyang's excellent and good air quality rate in 2021 was 98.9 percent, meeting China's national second-level standard.

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EU companies will also be able to export aluminum tariff-free.

"Steel is a key foundation industry and it is absolutely essential that it receives practical support from the government," he said.

Chinese authorities unveiled a plan to facilitate the development of the country's raw materials industry during the 14th Five-Year Plan period (2021-2025).