Sales revenues of the enterprises reached 1.54 trillion yuan, up 52.28 percent compared with a year ago, showed the data.

The change in the environment has also improved the quality of local people's lives.

In 2020, crude steel output rose by 5.2 percent year on year to exceed 1.05 billion tonnes, according to the China Iron and Steel Association.

Export tariffs on ferrosilicon, ferrochrome, high-purity pig iron would be raised to 25 percent, 20 percent and 15 percent, respectively.

The PMI for China's non-manufacturing sector moderated to 54.9, down 1.4 percentage points from March.

A reading above 50 indicates expansion, while a reading below reflects contraction.

Tariffs on exports of products such as ferrosilicon, ferrochromium, and high-purity pig iron will be raised temporarily to a rate of 25 percent, 20 percent, and 15 percent, respectively.

According to Luo, under the current pricing mechanism, iron ore prices are to a large extent determined by the producers rather than market forces.