| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 998.51 | USD | 20250922 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 998.2 | USD | 20250920 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 998.2 | USD | 20250919 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 998.8 | USD | 20250918 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 998.8 | USD | 20250918 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 999.62 | USD | 20250916 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 999.21 | USD | 20250915 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 999.89 | USD | 20250909 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 999.89 | USD | 20250909 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 999.59 | USD | 20250908 |