Aiming at quantifying and evaluating the regional commercial environmentalong with the level of economic development among cities in mainland China,the concept of China City Commercial Environment Credit Index(CEI) was firstintroduced and established in 2010. In this manuscript, a historical review anddetailed introduction of CEI is included, followed by statistical studies. Inparticular, an independent statistical cross-check for the existing CEI-2012 isperformed and significant factors that play the most in influential roles arediscussed.
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