| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 956.02 | USD | 20250919 |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 1237.21 | USD | 20250919 |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 913.85 | USD | 20250919 |
| Jinan Aochen Chemical Co., Ltd. | China national standards | MT | 984.14 | USD | 20250919 |