of centralized purchasing organization are clearly defined in Government Purchasing Law of China,which undoubtedly offers reliable legal basis for rightly standardizing actions of centralized purchasing organization.

Elementary introduction on centralized purchase of medical equipment in our hospital;

Design and implementation of medicine centralized purchase system based on J2EE;

Research on Centralized Purchase Management of Goods and Materials in Anhui Electric Power Corporation;

The decision-making by centralized purchasing matrix in automobile parts;

Study on centralized purchasing mode in domestic shipbuilding industry under the electronic commerce environment

centralized purchasing and integrated supply,describes a kind of organization-"extended enterprise",and analyses the structure of spare parts supply chain in outsourcing.

A supplier-enterprise group system which consists of a supplier, a group headquarters and several affiliated firms was considered in order to seek optimal order quantity of centralized procurement in enterprise group, in which the demand of each firm is an independent increment process and independent of other firms.

In order to solve the bargaining problems of centralized procurement in the environment of e-commerce,we propose the concept of Bargaining Track Chart.

While lots of enterprises use the single point buying model to make profits, few of them noticethe fact that the business complexitieswill finally shift to each pole of the supply chain, therefore, greatly increaseother enterprises workloads, especially for suppliers.

Currently ,single point buying is implemented by more and more enterprises ,but the consequence is not satisfied.