Looking for supplier of 20% copper concentrate

Dear colleagues, good afternoon.According to the preliminary agreement, we are sending you an offer for the supply of copper concentrate. 1 / Copper content in concentrate: 25% * complete Chemical Analysis attached to the letter. 2 / Quantity - 5000 tons 3 / Delivery by sea from the port of Vladivostok to the port of Shanghai port China. 4/ Price : 900 $ per tone CIF Shanghai port China. *Attached report, origin Russia