SMM Morning Comment on Alumina: The increase in alumina operating capacity faces numerous challenges. Although the current weekly operating rate of alumina is at a relatively high level, heavy pollution weather warnings frequently occur in the north, intermittently affecting alumina calcination. The rainy season in Guinea and disruptions in bauxite shipments have successively struck, making it difficult for the supply of Guinean bauxite to increase in the short term. The tight supply of bauxite continues to limit the increase in alumina operating capacity. Additionally, alumina refineries occasionally experience equipment failures or maintenance events. Under these circumstances...