| Vendor | Spec | Unit | Price | Currency | Date |
| Chang Zhou Qi Di Chemical Co., Ltd. | China national standards | MT | 748.13 | USD | 20251029 |
| Chang Zhou Qi Di Chemical Co., Ltd. | China national standards | MT | 746.53 | USD | 20251015 |
| Chang Zhou Qi Di Chemical Co., Ltd. | China national standards | MT | 745.41 | USD | 20251009 |
| Chang Zhou Qi Di Chemical Co., Ltd. | China national standards | MT | 745.41 | USD | 20251009 |