| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1448.89 | USD | 20250929 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1447.61 | USD | 20250928 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1447.61 | USD | 20250926 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1449.54 | USD | 20250925 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1449.54 | USD | 20250924 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 1449.54 | USD | 20250923 |
| 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 |