| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1448.54 | USD | 20250922 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1448.09 | USD | 20250920 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1448.09 | USD | 20250919 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1448.97 | USD | 20250918 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1448.97 | USD | 20250918 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1450.15 | USD | 20250916 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1449.56 | USD | 20250915 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1450.32 | USD | 20250912 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1450.01 | USD | 20250911 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1449.44 | USD | 20250910 |