The article begins with a summary of the theory of economy of scale,and then discusses the development status of Zhejiang civilian-run enterprises in two aspects,namely external economy of scale and internal economy of scale.

Taking Pingquan county Hebei province as an exdmple,the paper discusses the problems of the indus- trialization of agriculture in our country,and believes external economies of scale,nowadays,is a good develop- ment way of intra-county industrialization of agriculture in our country.

The external economy of scale,including forward-backward linkages and technological spillover,has no significant effect on spatial agglomeration in manufacturing industries.

This paper reviews history and present situation of integration of international trade theory and international direct investment theory, analyses the theoretical origin of internal scale economy stressly, inquiries into the theoretical basis of integ.

A probe into the economic scale of pulp enterprises in China;

Optimization model of economic scale of agricultural products logistics center;

Economics of scale and selecting economic scale of enterprise;

Empirical Analysis on Scale Economy ——Taking China s Automobile Industry as the Example;

Positive Analysis on Scale Economy of Automobile Industry in China;

On Scale Economy of Small and Medium-Sized Enterprises in Network Organization;