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        It took 20 years for sxcoal.com (Fenwei Digital Information Technology Co., Ltd.) to preliminarily complete the construction of big data system for the coal and coke industry, realizing the real-time monitoring of coal and coke prices, inventories, production and consumption and the big data-based quantitative prediction of prices in the next 42 days. Besides, we have established a database for coal application technologies, and quantified the weight of influence for 33 technical parameters that affect the quality of coke. With four functions of intelligent coal blending, resource management, production control and price prediction, the system can assist enterprises' decision-making in purchases, production and sales, and help them upgrade transaction modes, thus significantly reduce production cost and improve their core competitiveness.