The metallurgical industry refers to the industrial sector that mines, selects and sinters metal ores and refines and processes them into metal materials. In the process of development of metallurgical industry, due to its own characteristics, it is easy to be affected by many factors, such as domestic economy and international economy, mainly reflected in domestic and international macroeconomic two aspects.
A power station is a plant that converts all kinds of primary energy stored in nature into electricity (secondary energy). In the late 19th century, as the demand for electricity grew, people began to propose the idea of building a power production center. With the development of motor manufacturing technology, the expansion of electric energy application and the rapid growth of the demand for electricity production, power plants come into being.
The petroleum industry is the industrial sector that extracts petroleum (including natural petroleum, oil shale and natural gas) and refines and processes it. It is composed of oilfield geological exploration, oilfield development, oil exploitation, transportation, refining and processing units. Oil is the "blood" of industry and an important industrial energy source.
Chemical industry includes chemical industry, oil refining, metallurgy, energy, light industry, petrochemical industry, environment, medicine, environmental protection, military and other departments engaged in engineering design, fine and daily chemical industry, energy and power, technology development, production technology management and scientific research and other industries.
Coal mining industry refers to an industry based on mining coal resources. It is one of the main sources of national energy and one of the important pillars of the national economy. There are many enterprises in current coal industry, and the scale is small.
Paper industry is the manufacture of various kinds of paper and board industry. It includes pulp manufacturing with wood, reed, bagasse, straw, wheat straw, cotton straw, hemp stalk, cotton and other raw materials to make pulp, manufacturing paper and board industry and production of coating, glazing, gluing, laminating and other processing paper and type of paper plate processing paper manufacturing.
