Abubuwan da ke haifar da gibin farashin manyan tubalin alumina

Farashin manyan bulogin alumina yana jujjuyawa sosai a kasuwa. Bambance-bambancen farashin albarkatun kasa, hanyoyin samarwa da farashin aiki a wurare daban-daban shine babban abin da ke shafar hauhawar farashin kai tsaye.