| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1266.46 | USD | 20250905 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1266.68 | USD | 20250904 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1265.68 | USD | 20250903 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1266.02 | USD | 20250902 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1266.32 | USD | 20250901 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1266.48 | USD | 20250828 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1265.68 | USD | 20250827 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1264.26 | USD | 20250826 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1264.74 | USD | 20250825 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1261.9 | USD | 20250823 |