Who is the owner of Tsingshan nickel?

Could you please clarify who exactly is the owner of Tsingshan nickel? Is it a private company, a publicly traded entity, or perhaps a government-owned organization? Additionally, could you provide some insight into the background and history of Tsingshan nickel, perhaps highlighting any notable achievements or milestones in its development? Understanding the ownership structure and history of Tsingshan nickel would help in gaining a more comprehensive view of the company and its position in the industry.