| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 925.38 | USD | 20250818 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 924.75 | USD | 20250816 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 924.75 | USD | 20250816 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 924.75 | USD | 20250815 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 925.19 | USD | 20250814 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 925.02 | USD | 20250813 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 924.14 | USD | 20250812 |