The specs (inculde chemical contentions ) of our copper slag are as below:Size: 0.6mm to 2.5mm; 0.6mm to 3.0mmHardness: 6 to7Mositure: 0.2%maxSiO2: 34.0%CaO: 14.8%MgO: 11%Al2O3:1.8%Cu:0.02%Fe2O3: 46.5%NaCl: 0.01%Package:1000kg one bagDelievery time: 25daysPayment: 100%T/TMin order: 20MT