| Vendor | Spec | Unit | Price | Currency | Date |
| IM Yongxin Chem | China national standards | MT | 358.88 | USD | 20250930 |
| IM Yongxin Chem | China national standards | MT | 358.39 | USD | 20250928 |
| IM Yongxin Chem | China national standards | MT | 351.36 | USD | 20250926 |
| IM Yongxin Chem | China national standards | MT | 351.83 | USD | 20250925 |
| IM Yongxin Chem | China national standards | MT | 351.83 | USD | 20250924 |
| IM Yongxin Chem | China national standards | MT | 351.83 | USD | 20250923 |
| IM Yongxin Chem | China national standards | MT | 351.59 | USD | 20250922 |
| IM Yongxin Chem | China national standards | MT | 344.45 | USD | 20250919 |
| IM Yongxin Chem | China national standards | MT | 344.66 | USD | 20250918 |