Zhenghua Zhang, Director of Internal Medicine and Deputy Chief Physician of the Sixth Hospital of Zibo City. Member of the Shandong Provincial Respiratory Committee, member of the Shandong Professional Committee on Integrated Traditional Chinese and Western Medicine Occupational Diseases, member of the Cardiovascular Preventive Medicine Association of Zibo City, and adjunct associate professor of Jining Medical College. He has been in clinical work for 30 years, participated in the formulation of the National Diagnostic Criteria for Occupational Noise Deafness and the Diagnostic Criteria for Occupational Acute Paraquat Poisoning, published 20 national papers, 1 monograph, and 1 invention patent.