| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 759.61 | USD | 20250902 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 759.79 | USD | 20250901 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 760.24 | USD | 20250830 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 760.24 | USD | 20250829 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 759.89 | USD | 20250828 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 759.89 | USD | 20250828 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 759.41 | USD | 20250827 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 758.55 | USD | 20250826 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 758.84 | USD | 20250825 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 757.14 | USD | 20250823 |