| Vendor | Spec | Unit | Price | Currency | Date |
| Wanhua Chem | China national standards | MT | 626.81 | USD | 20260108 |
| Wanhua Chem | China national standards | MT | 626.9 | USD | 20260107 |
| Wanhua Chem | China national standards | MT | 626.9 | USD | 20260107 |
| Wanhua Chem | China national standards | MT | 610.85 | USD | 20260105 |
| Wanhua Chem | China national standards | MT | 610.85 | USD | 20260105 |
| Wanhua Chem | China national standards | MT | 611.77 | USD | 20260104 |
| Wanhua Chem | China national standards | MT | 611.77 | USD | 20260104 |
| Wanhua Chem | China national standards | MT | 606.08 | USD | 20251231 |
| Wanhua Chem | China national standards | MT | 606.08 | USD | 20251231 |
| Wanhua Chem | China national standards | MT | 604.14 | USD | 20251230 |