1. College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China
2. Engineering Technology Research Centre for Safe and Efficient Coal Mining, Anhui University of Science and Technology, Huainan, China
3. Corporate Management Department, Dongying United Petrochemical Co., Ltd., Dongying, China
4. Marketing Department, Shandong Yongneng Energy Saving and Environmental Protection Service Co. Ltd., Jinan, China
5. Engineering Department, Qingdao Water Group Co. Ltd., Qingdao, China