Magang (Group) Holding Co., Ltd., or known as Masteel Group, is one of the major Chinese iron and steel enterprises. Since 2019, it is a joint venture of central government owned China Baowu Steel Group and Anhui Provincial People's Government's State-owned Assets Supervision and Administration Commission (SASAC). It is headquartered in Ma'anshan, Anhui province. The group produced iron and steel via its listed subsidiary Maanshan Iron and Steel Company Limited, which was a listed company since 1993. However, the group had a significant part remained unlisted.