| Vendor | Spec | Unit | Price | Currency | Date |
| Chang Zhou Qi Di Chemical Co., Ltd. | China national standards | MT | 788.1 | USD | 20250924 |
| Chang Zhou Qi Di Chemical Co., Ltd. | China national standards | MT | 787.79 | USD | 20250918 |
| Chang Zhou Qi Di Chemical Co., Ltd. | China national standards | MT | 787.79 | USD | 20250918 |
| Chang Zhou Qi Di Chemical Co., Ltd. | China national standards | MT | 787.79 | USD | 20250918 |