| Vendor | Spec | Unit | Price | Currency | Date |
| Hunan JinyuChem | China national standards | MT | 1138.84 | USD | 20251211 |
| Hunan JinyuChem | China national standards | MT | 1137.74 | USD | 20251203 |
| Hunan JinyuChem | China national standards | MT | 1137.34 | USD | 20251127 |
| Hunan JinyuChem | China national standards | MT | 1137.07 | USD | 20251126 |
| Hunan JinyuChem | China national standards | MT | 1087.19 | USD | 20251115 |
| Hunan JinyuChem | China national standards | MT | 1087.06 | USD | 20251112 |
| Hunan JinyuChem | China national standards | MT | 1043.0 | USD | 20251017 |