| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1149.96 | USD | 20251119 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1150.22 | USD | 20251118 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1150.87 | USD | 20251117 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1143.81 | USD | 20251117 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1150.72 | USD | 20251115 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1143.66 | USD | 20251115 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1150.72 | USD | 20251114 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1150.07 | USD | 20251113 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1150.59 | USD | 20251112 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1143.53 | USD | 20251112 |