| Vendor | Spec | Unit | Price | Currency | Date |
| Jiangsu Youlixin Chemical Co., Ltd. | China national standards | MT | 1064.61 | USD | 20251023 |
| Jiangsu Youlixin Chemical Co., Ltd. | China national standards | MT | 1064.07 | USD | 20251022 |
| Jiangsu Youlixin Chemical Co., Ltd. | China national standards | MT | 1063.78 | USD | 20251020 |
| Jiangsu Youlixin Chemical Co., Ltd. | China national standards | MT | 1062.42 | USD | 20250905 |
| Jiangsu Youlixin Chemical Co., Ltd. | China national standards | MT | 1062.3 | USD | 20250901 |
| Jiangsu Youlixin Chemical Co., Ltd. | China national standards | MT | 1058.16 | USD | 20250813 |