| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1147.0 | USD | 20250930 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1147.0 | USD | 20250930 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1139.96 | USD | 20250930 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1146.45 | USD | 20250929 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1145.44 | USD | 20250928 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1145.44 | USD | 20250926 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1146.97 | USD | 20250925 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1139.93 | USD | 20250925 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1146.97 | USD | 20250924 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1139.93 | USD | 20250923 |