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Particularly, in view of the ratio of procurement fund to the average sales total is on the gradual growing trend, reducing the procurement costs is a second source of profit for the enterprise, as well as a solid foundation for realizing the primary profit, and changing the traditional ways of material procurement and storage is an unavoidable process in the development of modern enterprises. Coal is the most important basic energy source for ensuring the development of the national economy of China. Thus, the primary task of material procurement for the coal enterprises is to ensure the safe production of coal mine, timely supply and procurement cost reduction.

Under gaining the trend that the specific gravity selling an amount of money averagely increases gradually especially in purchasing a fund, that lessening purchases cost is both enterprise "second profit wellhead " and the solid basis realizing the first profit. Changing the tradition material purchase , sto