Who is the owner of Tsingshan Holding Group?

Could you please clarify who the owner of Tsingshan Holding Group is? I understand that Tsingshan is a prominent company in the metals and mining industry, but I'm not familiar with the specific ownership structure. Is it a publicly traded company, or is it privately held? If it's privately held, could you provide some insight into the major shareholders or the family that controls the group? Additionally, are there any notable individuals or entities that have significant influence or stake in Tsingshan Holding Group?