| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 760.34 | USD | 20251014 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 760.49 | USD | 20251013 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 760.05 | USD | 20251011 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 759.47 | USD | 20251009 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 759.97 | USD | 20251008 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 759.97 | USD | 20250930 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 759.61 | USD | 20250929 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 758.94 | USD | 20250928 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 758.94 | USD | 20250926 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 758.94 | USD | 20250926 |