1. Chongqing University of Science and Technology School of Chemistry and Chemical Engineering No. 20 Daxuecheng East Road, Shapingba District 401331 Chongqing China
2. Huanggang Emergency Management Vocational and Technical College No.11 Nanhu Road 438000 Huanggang City Hubei China
3. Dazhou Base, Zhongyuan Oilfield Puguang Branch No. 468 Phoenix Avenue 635000 Dazhou City Sichuan China