It includes rules of international law which contains international law and general principles of law,lex mercatoria,non-legal criteria which contains terms of contract and ex aequo et bono,etc.

Considers that the country should study and hold various kinds of factors among them conscientiously in the changing course of international law principle, and catch the opportunity of emerging.

An Economic Analysis on Change and Implemental Mechanism of International Rules;

The paper proposes a number of countermeasures and assumptions for speeding up the establishment of a Sino-foreign cooperation mechanism in this field in accordance with the international rules.

Comparative analysis of four primary international rules of governmental engineering procurement, those are the WTO GPA, the uncitral model law, the EU directives on public procurement and the WB procurement guidelines, primarily study on the principles and objectives, application scopes, procurement modes, procurement procedures challenge procedures and so.

Value of international rule on governmental purchase to perfect China s related legislation;

As the domination of west developed countries in the international rules and system, there is none of the united international rules and system, therefore,china should exact the function in forming the rules.