We can supply copper residue which resource from copper recycling smelting factories as following. 1. Product name : copper skimming 2. Product number : HHCS-35-50 3. Chemical specification. 1) copper : 50% - 60% 2) Particle size : mixed with metallic lumpy and powder form 4. Minimum Order Quantity : 40tons 5. Packing : 500kgs/steel drum 6. Country of origin : Korea .