Mr. Zhang Zhaoyun, born in October 1980, a Senior Engineer with a master's degree in engineering, is the Chief Engineer of the Company. In August 2017, Mr. Zhang started to serve as Chief Engineer of Xinglongzhuang Coal Mine of the Company. In January 2022, he was appointed as the Chief Engineer of Baodian Coal Mine of the Company. Mr. Zhang started to take positions of the Deputy Secretary of the CPC Xinglongzhuang Coal Mine Committee and the General Manager of Xinglongzhuang Coal Mine of the Company in April 2022. In May 2023, he became the Deputy Secretary of the CPC Dongtan Coal Mine Committee and the General Manager of Dongtan Coal Mine of the Company. Mr. Zhang is appointed as the Chief Engineer of the Company in June 2024. Mr. Zhang graduated from Shandong University of Science and Technology.