| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Qiangsen Chem | China national standards | MT | 776.66 | USD | 20251117 |
| Shandong Qiangsen Chem | China national standards | MT | 776.66 | USD | 20251117 |
| Shandong Qiangsen Chem | China national standards | MT | 776.56 | USD | 20251115 |
| Shandong Qiangsen Chem | China national standards | MT | 776.56 | USD | 20251114 |
| Shandong Qiangsen Chem | China national standards | MT | 776.12 | USD | 20251113 |
| Shandong Qiangsen Chem | China national standards | MT | 776.47 | USD | 20251112 |
| Shandong Qiangsen Chem | China national standards | MT | 776.11 | USD | 20251111 |
| Shandong Qiangsen Chem | China national standards | MT | 776.22 | USD | 20251110 |
| Shandong Qiangsen Chem | China national standards | MT | 776.44 | USD | 20251108 |
| Shandong Qiangsen Chem | China national standards | MT | 776.44 | USD | 20251107 |