| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 476.38 | USD | 20250816 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 476.38 | USD | 20250816 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 476.38 | USD | 20250815 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 476.61 | USD | 20250814 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 476.52 | USD | 20250813 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 476.07 | USD | 20250812 |