| Vendor | Spec | Unit | Price | Currency | Date |
| Liaocheng Yuanze Chemical Co., Ltd. | China national standards | MT | 1033.67 | USD | 20250922 |
| Liaocheng Yuanze Chemical Co., Ltd. | China national standards | MT | 1033.35 | USD | 20250921 |
| Liaocheng Yuanze Chemical Co., Ltd. | China national standards | MT | 1033.35 | USD | 20250920 |
| Liaocheng Yuanze Chemical Co., Ltd. | China national standards | MT | 1033.35 | USD | 20250919 |