| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 929.2 | USD | 20250908 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 929.2 | USD | 20250908 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 928.74 | USD | 20250907 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 928.74 | USD | 20250906 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 928.9 | USD | 20250904 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 928.41 | USD | 20250902 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 928.64 | USD | 20250901 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 929.18 | USD | 20250830 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 929.18 | USD | 20250829 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 928.75 | USD | 20250828 |