| 2615.90.30 | 00 | Synthetic tantalum-niobium (columbium) concentrates | kg | Free | | 30% |
| 2615.90.60 | 30 | Niobium (columbium) ores and concentrates | kg | | | |
| 2615.90.60 | 60 | Tantalum ores and concentrates | kg | | | |
| 2615.90.60 | 90 | Vanadium ores and concentrates | kg V2O5 kg | | | |
| 2616.10.00 | | Silver ores and concentrates | | 0.8￠/kg on lead content | Free (A+,AU,BH, CA,CL,D,E,IL,J, JO,MA,MX, P,SG) | 8.8￠/kg on copper content + 3.3￠/kg on lead content + 3.7￠/kg on zinc content |
| 2616.10.00 | 10 | Copper content | Cu kg | | | |
| 2616.10.00 | 20 | Lead content | Pb kg | | | |
| 2616.10.00 | 30 | Zinc content | Zn kg | | | |
| 2616.10.00 | 40 | Silver content | Ag g | | | |
| 2616.10.00 | 80 | Gold content | Au g | | | |
| 2616.90.00 | 10 | Copper content | Cu kg | | | |
| 2616.90.00 | 20 | Lead content | Pb kg | | | |
| 2616.90.00 | 50 | Other precious metal content | g | | | |
| 2616.90.00 | 30 | Zinc content | Zn kg | | | |
| 2616.90.00 | 40 | Gold content | Au g | | | |
| 2617.10.00 | 00 | Antimony ores and concentrates | kg Sb kg | Free | | Free |
| 2617.90.00 | 30 | Beryllium ores and concentrates | kg | | | |
| 2620.19.30 | 00 | Zinc dross and zinc skimmings | kg Zn kg | Free | | 3.3￠/kg |
| 2620.19.60 | 10 | Copper content | Cu kg | | | |
| 2620.19.60 | 20 | Lead content | Pb kg | | | |
| 2620.19.60 | 30 | Zinc content | Zn kg | | | |
| 2620.19.60 | 40 | Silver content | Ag g | | | |
| 2620.19.60 | 50 | Gold content | Au g | | | |
| 2620.21.00 | | Leaded gasoline sludges and leaded anti- knock compound sludges | | Free | | 8.8￠/kg on copper content + 3.3￠/kg on lead content + 3.7￠/kg on zinc content |
| 2620.21.00 | 10 | Copper content | Cu kg | | | |
