| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1265.72 | USD | 20250922 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1265.32 | USD | 20250920 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1265.32 | USD | 20250919 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1266.09 | USD | 20250918 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1267.12 | USD | 20250916 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1267.12 | USD | 20250916 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1266.61 | USD | 20250915 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1267.27 | USD | 20250912 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1267.0 | USD | 20250911 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1266.5 | USD | 20250910 |