| Vendor | Spec | Unit | Price | Currency | Date |
| Weifang Yixin Chem | China national standards | MT | 1624.39 | USD | 20251126 |
| Weifang Yixin Chem | China national standards | MT | 1637.82 | USD | 20251125 |
| Weifang Yixin Chem | China national standards | MT | 1692.41 | USD | 20251120 |
| Weifang Yixin Chem | China national standards | MT | 1693.58 | USD | 20251118 |
| Weifang Yixin Chem | China national standards | MT | 1694.53 | USD | 20251117 |
| Weifang Yixin Chem | China national standards | MT | 1694.32 | USD | 20251114 |
| Weifang Yixin Chem | China national standards | MT | 1693.36 | USD | 20251113 |
| Weifang Yixin Chem | China national standards | MT | 1694.13 | USD | 20251112 |
| Weifang Yixin Chem | China national standards | MT | 1693.34 | USD | 20251111 |
| Weifang Yixin Chem | China national standards | MT | 1693.58 | USD | 20251110 |