| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Zengyue Chem | China national standards | MT | 1024.4 | USD | 20251209 |
| Shandong Zengyue Chem | China national standards | MT | 1031.16 | USD | 20251202 |
| Shandong Zengyue Chem | China national standards | MT | 1024.07 | USD | 20251126 |
| Shandong Zengyue Chem | China national standards | MT | 1018.0 | USD | 20251114 |
| Shandong Zengyue Chem | China national standards | MT | 1009.42 | USD | 20251112 |
| Shandong Zengyue Chem | China national standards | MT | 987.92 | USD | 20251110 |
| Shandong Zengyue Chem | China national standards | MT | 1030.1 | USD | 20251103 |
| Shandong Zengyue Chem | China national standards | MT | 1171.39 | USD | 20251028 |