| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.68 | USD | 20250908 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.44 | USD | 20250907 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.44 | USD | 20250906 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.52 | USD | 20250904 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.27 | USD | 20250902 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.39 | USD | 20250901 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.67 | USD | 20250830 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.67 | USD | 20250829 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.45 | USD | 20250828 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.45 | USD | 20250828 |