The world wide aluminium output and consume over 35 million tons. As to the IAI forecast The world consume of aluminium will  increasing two times of 60 to 70 million tons in the year of 2020, China aluminium will increasing over 18% annually, over 90% aluminium will be made into aluminium alloy, over 70% aluminium alloy need to have around 3% alloying element of Fe , Mn ,Cu,Ti and Cr,Then the total consume of alloying element will be=11million tons×90%×70%×3%=207.9 thousands tons，the total output value will be around =RMB20000/MT×207.9thousands tons=RMB4.158billions。