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China is relatively rich in coal resources , a shortage of oil and gas resources , coal is still the main energy . In the future, a long period of time , the coal will be the basis of China 's energy security supply , is expected by the end of 2015 , coal demand will reach 34 million tons . Currently, the production of large and medium-sized state-owned coal enterprises have been basically in a state of full load , the resulting material consumption has increased year by year . A wide range of coal enterprise material up to several thousand species , and the timely and effective supply of coal enterprise material directly affects the security of coal mining and coal operations , therefore , reasonable inventory of supplies essential for coal production enterprises . In this paper, based on in-depth surveys and interviews , to collect first-hand information , combined with state-of-the-art supply chain inventory theory , analysis of pingzhuang Coal Industry ( Group ) Co. , Ltd. supplies inventory influential factors . Kraljic matrix , the inventory is divided into four categories: strategic materials , leverage materials , bottlenecks supplies , general supplies and inventory management strategy combined with the characteristics of each type of material . For strategic materials, based on fuzzy comprehensive evaluation method established Pingmei supplier evaluation system ; for bottlenecks supplies , establish reasonable safety stock model ; a reasonable material requirements process for leveraged supplies , the binding material requirements analysis ; For the average supplies supplies supermarket improved method .
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