| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1151.96 | USD | 20251205 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1144.89 | USD | 20251205 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1152.22 | USD | 20251204 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1151.88 | USD | 20251203 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1151.23 | USD | 20251202 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1151.8 | USD | 20251201 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1144.73 | USD | 20251201 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1151.31 | USD | 20251129 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1144.25 | USD | 20251129 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1144.25 | USD | 20251128 |