| Since the engineering construction investment is enormous and the material cost has occupied a major part among them.Engineering materials supplier selection is the start point of engineering construction, and is directly in relation with the quality and cost of material purchasing at the same time. It is very important to the reduction of the cost of engineering logistics and supply chain management whether materials supplier seletion is good or not.But, at the present, engineering materials supplier selection has not references of scientific methods, but is through experience or other approaches, this is blind beyond doubt and is also not enough objective.Therefore, the method of engineering materials supplier selection is researched further in this paper.This paper first points out the significance of this study, and elaborate the theory of engineering materials, supplier and engineering materials supplier etc, which prepares for the next research.And it puts forward the basic principles during supplier selection, and explain the influence factors of the principle of supplier selection and the approach of supplier selection, and furthermore establish the assessment index system of engineering materials supplier, which prepares for the selection methods.At last, it brings forward the model of engineering materials supplier selection on the basic theory of gray relevancy model. It determines the index-weight based on the theory of entropy, which avoids the effect of subjective factor.Finally, it has conducted the real diagnosis research and proves that the model has the theory significance and the practice significance.The results of the paper can be a theoretical guide for the SCM taking effect on engineering construction industry . And it has the positive advance significance to our country engineering construction industry's synthesis strength and the international competition strength enhancement. |