Mr. Sun Ruiwen, born in 1969, is a professor-level senior engineer. Mr. Sun Ruiwen has been the executive Director and chief executive officer of the Company since May 2021. Mr. Sun graduated from East China Jiaotong University, majoring in safety engineering. From 2008 to 2009, he served as the deputy chief economist of China Railway Resource Group Co., Ltd., and the chairman of China Railway Resources Trading Co., Ltd.. From 2009 to 2012, Mr. Sun served successively as the chairman of Congo (DRC) Luisha Mining, MKM Mining, Congo (DRC) International Mining Corporation and the deputy general manager of China Railway Resource Group. From 2012 to 2017, he served as the general manager of Huagang Mining Co., Ltd. and chairman of Busanga Hydropower Station Co., Ltd.. From 2017 to 2019, Mr. Sun served as the general manager of China Railway Resource Group Co., Ltd.