| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1443.41 | USD | 20250819 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1444.15 | USD | 20250818 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1443.16 | USD | 20250816 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1443.16 | USD | 20250816 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1443.16 | USD | 20250815 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1443.85 | USD | 20250814 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1443.59 | USD | 20250813 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1442.21 | USD | 20250812 |