| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 971.46 | USD | 20250916 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 971.07 | USD | 20250915 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 971.72 | USD | 20250909 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 971.72 | USD | 20250909 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 970.85 | USD | 20250901 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 971.42 | USD | 20250830 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 971.42 | USD | 20250829 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 970.97 | USD | 20250828 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 970.97 | USD | 20250828 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 970.35 | USD | 20250827 |