We urgently import crude cuporic oxide which is made of waste liquid after manufacturing electric circuit board and our specifications: Cu 70 + / -2% min. Fe 0. 1% max pb 0. 1% max ni 0. 005% max as 0. 003% max CD 0. 001% max we need 300mt per month. If you can provide us, please tell us about CIF Zhangjiagang port, china, packing and delivery time.