Funding for this research was provided by:
The study was supported by “Shandong social science planning project. (Grant No. 18BJJJ09)
Received: 14 August 2018
Accepted: 11 December 2018
First Online: 20 February 2019
: AW, Doctor of Management, is a professor, graduated from Tianjin University in 2007, and worked in China University of Petroleum. His research interests include theory and practice of financial management.
: The author declares that she has no competing interests.
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