| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 476.72 | USD | 20250822 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 476.95 | USD | 20250821 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 476.95 | USD | 20250821 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 476.3 | USD | 20250820 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 476.46 | USD | 20250819 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 476.71 | USD | 20250818 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 476.38 | USD | 20250816 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 476.38 | USD | 20250816 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 476.38 | USD | 20250815 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 476.61 | USD | 20250814 |