There are significant differences in the demand for coal among various sectors of the national economy. With the growth of the total economic output, China's industrial structure has undergone significant changes, and overall, the intensity of coal consumption continues to decline. Impact on the development of coal washing machinery

　　At present, coal consumption in China is mainly concentrated in several major industries such as electricity, steel, building materials, and chemical industry. The products of these industries have directly become people's daily consumption goods and important intermediate products. During the 12th Five Year Plan period, China's industrial structure will also undergo significant changes, with the primary industry significantly declining to below 9% by 2015; The secondary industry remained generally stable and grew during the 12th Five Year Plan period, reaching 49.6% by 2015; The tertiary industry is relatively stable, maintaining around 41%, but still not exceeding the share of the secondary industry. From the perspective of the secondary industry, manufacturing still accounts for the main share, but during the 12th Five Year Plan period, compared with recent years, it has not shown further improvement and has remained at a level of nearly 34% of GDP. From the perspective of industry structure, China's economic structure continues to maintain the trend of heavy chemical industry development during the 12th Five Year Plan period.

　　Coal cost

　　The price of coal is first affected by the cost of coal. As a resource-based industry, coal production and operation have significant externalities, including environmental costs, safety costs, resource waste costs, etc. The prices of various raw and auxiliary materials required for coal production also increase the production cost of coal. The long-term factors that determine the cost of coal are coal reserves and exploitable conditions. Although China has relatively large coal reserves, the per capita share is very low, lower than the world average. On the other hand, China's coal resources are wasted astonishingly. At present, the production of large state-owned coal mines in China accounts for about 65% of the country's coal production, and the average mining recovery rate (the ratio of extracted coal to recoverable reserves) is only about 45%; The average recovery rate of townships and individual small coal mines, which account for about 35% of the national coal production, is only 15% to 20%.