| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Chem | China national standards | MT | 787.6 | USD | 20251009 |
| Shandong Yihe Chem | China national standards | MT | 788.12 | USD | 20251008 |
| Shandong Yihe Chem | China national standards | MT | 788.12 | USD | 20251007 |
| Shandong Yihe Chem | China national standards | MT | 787.05 | USD | 20250927 |
| Shandong Yihe Chem | China national standards | MT | 788.1 | USD | 20250924 |
| Shandong Yihe Chem | China national standards | MT | 788.1 | USD | 20250923 |
| Shandong Yihe Chem | China national standards | MT | 787.56 | USD | 20250922 |
| Shandong Yihe Chem | China national standards | MT | 787.31 | USD | 20250919 |