Aluminum ingots A7 requirement, CIF China ports

We would like to buy aluminium ingots 99.7%, clean and unburnt.
Contract duration: 12 months, expandable subject to mutual agreement.
Monthly volume: 30,000 m/t (thirty thousand metric tons).
Packaging: Standard export packaging for aluminium ingots, suitable for CIF shipment and compliant with Chinese import regulations. Final packing specifications to be confirmed at contract stage.
Payment terms: Irrevocable, transferable Documentary Letter of Credit (DLC), to be issued by a first-class Hong Kong bank. Full payment terms to be confirmed in the final agreement.