| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.3 | USD | 20250918 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.3 | USD | 20250918 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.69 | USD | 20250916 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.5 | USD | 20250915 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.75 | USD | 20250912 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.64 | USD | 20250911 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.46 | USD | 20250910 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.82 | USD | 20250909 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.82 | USD | 20250909 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.68 | USD | 20250908 |