Cov zis ntawm lub ntiaj teb sab saum toj kaum tsib alumina manufacturers nyob rau hauv 2021 yog 110 lab tons, accounting rau 85% ntawm lub ntiaj teb no cov zis tag nrho. Ntawm lawv, Suav tuam txhab lag luam tuav xya lub rooj, nrog rau tag nrho cov khoom tsim tawm ntawm 62.4 lab tons. Lwm yim lub tuam txhab txawv teb chaws yog Alcoa, UC RUSAL, Rio Tinto, Hydro, South32, Indian Aluminium Industry Limited (Hindalco), thiab Emirates Global Aluminium (EGA). ) thiab National Aluminium Corporation ntawm Is Nrias teb (Nalco), nrog rau tag nrho cov zis ntawm 48.4 lab tons.
