| Vendor | Spec | Unit | Price | Currency | Date |
| Chang Zhou Qi Di Chemical Co., Ltd. | China national standards | MT | 959.87 | USD | 20251029 |
| Chang Zhou Qi Di Chemical Co., Ltd. | China national standards | MT | 957.81 | USD | 20251015 |
| Chang Zhou Qi Di Chemical Co., Ltd. | China national standards | MT | 956.37 | USD | 20251009 |
| Chang Zhou Qi Di Chemical Co., Ltd. | China national standards | MT | 956.37 | USD | 20251009 |
| Chang Zhou Qi Di Chemical Co., Ltd. | China national standards | MT | 956.6 | USD | 20250918 |