| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Jinshenrun Chem | China national standards | MT | 591.09 | USD | 20250930 |
| Shandong Jinshenrun Chem | China national standards | MT | 590.81 | USD | 20250929 |
| Shandong Jinshenrun Chem | China national standards | MT | 633.01 | USD | 20250929 |
| Shandong Jinshenrun Chem | China national standards | MT | 590.29 | USD | 20250927 |