| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chem | China national standards | MT | 1901.54 | USD | 20251015 |
| Shandong Hongyang Chem | China national standards | MT | 1900.85 | USD | 20251014 |
| Shandong Hongyang Chem | China national standards | MT | 1901.22 | USD | 20251013 |
| Shandong Hongyang Chem | China national standards | MT | 1900.12 | USD | 20251011 |
| Shandong Hongyang Chem | China national standards | MT | 1900.12 | USD | 20251010 |
| Shandong Hongyang Chem | China national standards | MT | 1898.68 | USD | 20251009 |
| Shandong Hongyang Chem | China national standards | MT | 1899.94 | USD | 20250930 |
| Shandong Hongyang Chem | China national standards | MT | 1897.35 | USD | 20250928 |