| Vendor | Spec | Unit | Price | Currency | Date |
| Wanhua Chem | China national standards | MT | 992.16 | USD | 20250923 |
| Wanhua Chem | China national standards | MT | 991.48 | USD | 20250922 |
| Wanhua Chem | China national standards | MT | 1012.26 | USD | 20250919 |
| Wanhua Chem | China national standards | MT | 1012.87 | USD | 20250918 |