excuse me, which enterprises are big coal users? Large coal users, first of all, power companies, power plants use the most coal!

followed by large chemical enterprises,

followed by steel plants, heating companies, cement plants, coking plants, metallurgical plants and large catering institutions. Coal is a combustible black or brownish black sedimentary rock, which usually occurs in rock strata or veins called coal beds or coal seams. Hard forms of coal can be considered metamorphic rocks, such as anthracite, because of subsequent exposure to elevated temperature and pressure. Coal is mainly composed of carbon, together with different amounts of other elements, mainly hydrogen, sulfur, oxygen and nitrogen.

historically, coal has been used as an energy resource, mainly burned to produce electricity and/or heat, and it can also be used for industrial purposes, such as refining metals, or producing fertilizers and many chemical products. As a fossil fuel, the formation of coal is that ancient plants were buried in the ground before decomposition, converted into peat, then into lignite, then sub-bituminous coal, then bituminous coal and finally anthracite. Hydrocarbons produced by coal act under the pressure and temperature conditions of crustal movement air, resulting in carbonized fossil minerals, that is, coal is plant fossils. This involves a long period of biological and geological processes.