A study on factors and development models of industry chain extension in cyclic economic zone based on division theory

The economic development model that cyclic economy promotes is on the basis of material recycling, which requires all the economic activities must in accordance with the natural ecosystem. In this paper, we analysis the basic theory and factors of industry chain extension in cyclic economic zone based on division theory. Then on this basis, we explain the formation mechanism of three main model in cyclic economic zone. That is attached down-stream of leading enterprise model, self-extended of leading enterprise model, and industrial symbiosis model. Thus we offer theoretical bases for drawing up measures to promote the extension and development of industrial chain in cyclic economic zone.