| With the rapid development of science and technology plus the fierce market competition of the global economy, the competition among the enterprises has become more and more intensively all over the world and the enterprises have to face more austere surviving condition and high developing presure. Now the old traditional pattern of business administration can't achieve the requirement of the variational market, the purchasing management is becoming the new headspring to the new profit. In spite of the short period from bringing forward the new concept of supply chains, people gradually realize the supply chains is the moer important means to improve the enterprise's competition capacity in addition to the valid and effective management pattern for the enterprises to acclimatize themselve to the global competition, in this case the purchase chains become more and more important in the process of the enterprises' surviving and developing. The important content of the enterprise management lies in the two aspects of Strenthening the theoretic research and putting the theory of supply chains into use, which can improve the competitive ability and predominance.The action of purchase joins the buyer and supplier. Because of the position of purchasing in the supply chains, To optimize the supply chains will start at the stage of purchase. It is necessary to research the theory of purchase management, which will provide a basis and experience for its transformation from traditional pattern to a new type and improve the efficiency of the purchase management under the condition or supply chains. In the fierce market competion, Chine Erzhong meets the two challenge of diversification and individuation of the requirement, so enterprise's purchase action not only must achieve the requirement of the diversification in the producing process, which can help to make the individual product, but also finish purchasing job with lowest cost, which can help to reduce the whole manufacture cost. It is obvious that purchasing cost will play a very important role to form the whole manufacture cost and improve the enterprise's core competition. The centralized strategic purchase is defined as that China Erzhong Co. bases on the type of purchase chain to put the mode of the centralized strategic purchase into practice, and centralize the purchasing action and the suppliers to be managed together and strengthen the cooperation with the suppliers so that the company can make the purchase mode with the lowest purchasing cost in the purchase chain and most high efficiency to be true.This research focuses on the company's outer factor affected the purchase management such as the economic store, market value information forecast and supplier, and give emphasis on the relation and influence between the three factors and the company, applying the advanced theory of material flow and supply chain to strengthen the price quotation forecast, supplier management, to confirm the economic store and optimize Erzhong Co.'s large scale purchase mode at present, in view of Erzhong Co.'s manufacture character mode of small batch to each kind of production, reduce purchase cost, improve management level and economical benefit. |