| Vendor | Spec | Unit | Price | Currency | Date |
| Xuzhou Haoze Chem | China national standards | MT | 607.74 | USD | 20251203 |
| Xuzhou Haoze Chem | China national standards | MT | 607.21 | USD | 20251117 |
| Xuzhou Haoze Chem | China national standards | MT | 607.06 | USD | 20251112 |
| Xuzhou Haoze Chem | China national standards | MT | 606.79 | USD | 20251106 |
| Xuzhou Haoze Chem | China national standards | MT | 606.77 | USD | 20251103 |
| Xuzhou Haoze Chem | China national standards | MT | 606.98 | USD | 20251029 |
| Xuzhou Haoze Chem | China national standards | MT | 606.65 | USD | 20251027 |