| Vendor | Spec | Unit | Price | Currency | Date |
| Weifang Yixin Chem | China national standards | MT | 1700.42 | USD | 20251106 |
| Weifang Yixin Chem | China national standards | MT | 1720.71 | USD | 20251105 |
| Weifang Yixin Chem | China national standards | MT | 1735.2 | USD | 20251104 |
| Weifang Yixin Chem | China national standards | MT | 1749.76 | USD | 20251103 |
| Weifang Yixin Chem | China national standards | MT | 1756.49 | USD | 20251031 |
| Weifang Yixin Chem | China national standards | MT | 1756.89 | USD | 20251030 |
| Weifang Yixin Chem | China national standards | MT | 1757.41 | USD | 20251029 |
| Weifang Yixin Chem | China national standards | MT | 1764.14 | USD | 20251028 |
| Weifang Yixin Chem | China national standards | MT | 1763.52 | USD | 20251027 |
| Weifang Yixin Chem | China national standards | MT | 1762.35 | USD | 20251024 |