Where is the superior unit of Shandong Energy Group?

Shandong Energy Group Co., Ltd. is a wholly state-owned company in Shandong Province, which was reorganized by Xinwen Mining Group Co., Ltd., Zaozhuang Mining Group Co., Ltd., Zibo Mining Group Co., Ltd., Feicheng Mining Group Co., Ltd., Linyi Mining Group Co., Ltd. and Longkou Mining Group Co., Ltd. It has a registered capital of 654.38+0 billion yuan, 230,000 employees and total assets of 654.38+0.673 billion yuan, ranking 75th among the top 500 Chinese enterprises. The group headquarters is located in Jinan.