| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Jinwen Chem | China national standards | MT | 1209.53 | USD | 20251009 |
| Shandong Jinwen Chem | China national standards | MT | 1210.33 | USD | 20250930 |
| Shandong Jinwen Chem | China national standards | MT | 1209.75 | USD | 20250929 |
| Shandong Jinwen Chem | China national standards | MT | 1208.68 | USD | 20250928 |
| Shandong Jinwen Chem | China national standards | MT | 1209.09 | USD | 20250919 |