1. School of Management, Xi’an University of Architecture and Technology, Xi’an 710055, China
2. Architecture College of Xi’an, Xi’an University of Architecture and Technology, Xi’an 710055, China
3. School of Resource Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
4. Luanchuan Longyu Molybdenum Industry Co., Ltd., Nannihu Molybdenum Mine, Luoyang 471500, China