| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Chem | China national standards | MT | 1079.65 | USD | 20251118 |
| Shandong Yihe Chem | China national standards | MT | 1080.26 | USD | 20251117 |
| Shandong Yihe Chem | China national standards | MT | 1080.26 | USD | 20251117 |
| Shandong Yihe Chem | China national standards | MT | 1080.13 | USD | 20251116 |
| Shandong Yihe Chem | China national standards | MT | 1080.13 | USD | 20251115 |
| Shandong Yihe Chem | China national standards | MT | 1073.07 | USD | 20251114 |
| Shandong Yihe Chem | China national standards | MT | 1058.35 | USD | 20251113 |
| Shandong Yihe Chem | China national standards | MT | 988.24 | USD | 20251112 |
| Shandong Yihe Chem | China national standards | MT | 987.78 | USD | 20251111 |
| Shandong Yihe Chem | China national standards | MT | 987.92 | USD | 20251110 |