Aluminium Corporation of China (Chalco) announced Friday that its board approved a plan to build a 1.2-million-ton per year alumina refinery in Guinea.
The project marks Chalco's first overseas alumina venture, with an estimated total investment of around $1 billion.
The board approved the investment on June 26, 2025, but delayed disclosure to avoid adverse impact on project progress.
Three Chalco subsidiaries signed an amended mining agreement with Guinea's government on Thursday. The agreement requires shareholder and government approvals.
