Buying aluminium ingots grade A7, 300 000 mt monthly, to China

I need aluminium ingots grade A7 (Al > 99.70%).
Volume: 300,000 MT per month x 12 months.
Terms of delivery: CIF Nansha Port (Guanzhou) China. 
Payment method: DLC.
Ingot weight 25 Kg piece on pallet.
SGS, Factory Test Report with FCO.