| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Chem | China national standards | MT | 1270.9 | USD | 20251117 |
| Shandong Yihe Chem | China national standards | MT | 1270.9 | USD | 20251117 |
| Shandong Yihe Chem | China national standards | MT | 1270.74 | USD | 20251116 |
| Shandong Yihe Chem | China national standards | MT | 1270.74 | USD | 20251115 |
| Shandong Yihe Chem | China national standards | MT | 1270.74 | USD | 20251114 |
| Shandong Yihe Chem | China national standards | MT | 1270.59 | USD | 20251112 |
| Shandong Yihe Chem | China national standards | MT | 1270.0 | USD | 20251111 |
| Shandong Yihe Chem | China national standards | MT | 1270.18 | USD | 20251110 |
| Shandong Yihe Chem | China national standards | MT | 1270.54 | USD | 20251109 |
| Shandong Yihe Chem | China national standards | MT | 1270.54 | USD | 20251107 |