| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1148.4 | USD | 20251016 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1148.4 | USD | 20251016 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1147.97 | USD | 20251015 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1147.55 | USD | 20251014 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1147.77 | USD | 20251013 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1147.11 | USD | 20251011 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1147.11 | USD | 20251010 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1140.07 | USD | 20251010 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1146.24 | USD | 20251009 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1139.21 | USD | 20251009 |