1. China Institute for Small and Medium Enterprises, Zhejiang University of Technology, Hangzhou 310014, Zhejiang Province, P. R. China
2. School of Management, Zhejiang University of Technology, Hangzhou 310014, Zhejiang Province, P. R. China
3. School of Economics and Management, Yiwu Industrial & Commercial College, Yiwu 322000, Zhejiang Province, P. R. China