The relationship between the construct and performance of Chinese Steel industrial organization is analyzed by discussing the scale and concentration and barriers to enter of Chinese steel industry.

License,Barriers to Entry and the Land Performance in Beijing;

Barriers to Entry, Entry Regulation and Foundation of Competition Mechanism of Health Care Industry;

Using the Theory of Barriers to entry of the Industrial Organization, this paper analyses the Chinese pharmaceutical industry.

From the evolution point of view,by constructing dynamic Cournot model,the paper analyzes the network externalities′ effects as entry barriers on enterprises decisions of markets entries and dynamic evolution of market structure.

Then the article analyses the impact of these three aspects to the "structure entry barriers" and "strategic entry barriers",and explains the mechanism that the dynamic environments impact the industry entry barrier.

During the war,corporations must realize that the market entry barriers have important connections with the war of standards.

Then we point out that the cooperatives trend of the bulk shipping company that generally observed is the strategy to set up entry barrier and alleviate the competition pressure.

This different iation of the products results into the vertical and horizontal entry barrier of potential entrant.

Starting with the origin of monopoly formed, removing the entry barrier which cause harm of monopoly, redesigning system frame of antimonopoly law, and replacing the traditi.

The structural entry barriers of the generation market are studied,and factors leading to the barriers are analyzed in order to make the potential entering enterprises to fully recognize the.