| Vendor | Spec | Unit | Price | Currency | Date |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 353.24 | USD | 20251209 |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 353.34 | USD | 20251203 |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 353.34 | USD | 20251203 |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 353.14 | USD | 20251202 |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 353.03 | USD | 20251117 |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 352.94 | USD | 20251112 |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 352.93 | USD | 20251107 |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 352.6 | USD | 20251105 |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 352.68 | USD | 20251104 |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 352.77 | USD | 20251103 |