Detailed introduction
Keywords: Qingli Group, Qingli Tianmeng Chemical, Qingli Logistics
Coal
The main component of coal is carbon, and it also contains elements such as hydrogen, sulfur, oxygen, and nitrogen. Its color ranges from brown to black. Depending on its degree of coalification, coal can be classified into peat, lignite, bituminous coal, and anthracite.
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Detailed introduction
Keywords: Qingli Group, Qingli Tianmeng Chemical, Qingli Logistics