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采购成本是企业经营成本中最大的一部分,一般在40%～70%之间,铁路工业企业采购成本占总成本的70%左右。由于铁路工业企业的利润率较低,采购
Purchasing cost is the largest part of the operating cost of an enterprise, which is generally between 40% and 70%. The purchasing cost of railway industrial enterprises accounts for about 70% of the total cost. Due to the lower profit margin of the railway industrial enterprises, procurement