| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 479.22 | USD | 20251017 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 479.22 | USD | 20251017 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 479.09 | USD | 20251016 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.91 | USD | 20251015 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.73 | USD | 20251014 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.83 | USD | 20251013 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.55 | USD | 20251011 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.19 | USD | 20251009 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.5 | USD | 20251008 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 478.5 | USD | 20250930 |