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Other factors influencing price fluctuation of main coking coal are as follows:
(1) Industry Policy: For enterprises involved in coal mining and washing, the state's investment in fixed assets in the overall coal industry is an important indicator of the scale, speed, proportion and direction of investment in fixed assets in this industry. The adjustment of domestic coal policy has a certain impact on the price of coking coal, and the policy adjustment of major foreign coking coal source countries also has an impact on domestic coking coal to a certain extent.
(2) International coking coal price and import and export. Comparing the price of international coking coal agreement with the price of main coking coal in China, it is found that the price of international coking coal has a certain guiding effect on the domestic market, but its strength is limited. This is mainly because on the one hand, China's coking coal mainly depends on its own production, on the other hand, Mongolia has replaced Australia as China's coke. Coal importing countries, while Mongolia's coking coal price is far lower than the international coking coal agreement price, which makes the average import price of coking coal in China at a relatively stable level.
(3) The influence of power coal on the price of main coking coal: China's power coal reserves are much higher than coking coal, which accounts for 72% of China's coal resources. About 70% of coking coal is used as power coal, and about 30% of other coking coal bituminous coal is also used as power coal. We select the weekly data of the entrance price of No. 4 coking coal pit in Liulin from 2005 to 2012 and compare them with those of Datong mining area, and find that the correlation between them is as high as 0.9.
(4) The influence of transportation on the price of main coking coal and sintered coal. For such commodities as coking coal, railway has been the main mode of coal transportation because of its advantages of large capacity, fast speed, low cost and low energy consumption.