| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.15 | USD | 20250827 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 477.61 | USD | 20250826 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 477.79 | USD | 20250825 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 476.72 | USD | 20250823 |
| 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 |