Our company mainly imports non-ferrous metals and minerals waste residues, such as brass dust, brass ashes, copper ash, copper waste residues etc which copper content is more than 10%. Also we buy lead ash, lead residues which lead content is more than 40%. If you stock these kinds of material, contact us, and send us the assay report and some pictures of your cargo. We import these kinds of waste residues 300 ton per month, hoping to cooperate with you for long-term. I am looking forward to your reply. Best Regards, Amy Liu Show More