| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 745.89 | USD | 20250915 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 746.39 | USD | 20250909 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 746.39 | USD | 20250909 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 746.17 | USD | 20250908 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 746.17 | USD | 20250908 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 745.81 | USD | 20250907 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 745.81 | USD | 20250906 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 745.54 | USD | 20250902 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 745.72 | USD | 20250901 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 746.16 | USD | 20250830 |