Department level. According to official website's inquiry to the National Organization Committee, the legal representative of the secondary subsidiary of an important state-owned enterprise is the official department level, Zaozhuang Mining (Group) Co., Ltd. is an enterprise owned by Shandong Energy Group, and the chairman of Zaozhuang Mining (Group) Co., Ltd. is also the party secretary, and the party secretary of state-owned enterprise is equivalent to the legal representative, so it is the official department level.