Notice of RetractionA probe into the circular economy development models of Songzi county

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

Drawing on previous experience and combined with the actual situation in Songzi county, this paper builds four types of circular economy models including household living type, recycling eco-village type, ecological cultivation garden type and ecological agriculture industry type around the topic of the production and use of bio gas.Eventually the economy of Songzi would develop into circular economy as the combination of agriculture, industry and service industry, providing a reference for the continued development of circular economy of Songzi county.