| Vendor | Spec | Unit | Price | Currency | Date |
| Chang Zhou Qi Di Chemical Co., Ltd. | China national standards | MT | 988.1 | USD | 20251029 |
| Chang Zhou Qi Di Chemical Co., Ltd. | China national standards | MT | 985.98 | USD | 20251015 |
| Chang Zhou Qi Di Chemical Co., Ltd. | China national standards | MT | 985.98 | USD | 20251015 |
| Chang Zhou Qi Di Chemical Co., Ltd. | China national standards | MT | 984.5 | USD | 20251009 |