| Vendor | Spec | Unit | Price | Currency | Date |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 352.37 | USD | 20251017 |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 351.87 | USD | 20251011 |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 351.61 | USD | 20251009 |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 351.36 | USD | 20250928 |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 351.36 | USD | 20250926 |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 351.83 | USD | 20250925 |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 351.83 | USD | 20250924 |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 351.83 | USD | 20250923 |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 351.48 | USD | 20250919 |
| Jiangsu SOPO Chemical Co., Ltd. | China national standards | MT | 351.69 | USD | 20250918 |