| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1241.68 | USD | 20251119 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1241.96 | USD | 20251118 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1242.66 | USD | 20251117 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1242.5 | USD | 20251115 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1242.5 | USD | 20251114 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1241.8 | USD | 20251113 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1242.36 | USD | 20251112 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1241.78 | USD | 20251111 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1241.96 | USD | 20251110 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1241.53 | USD | 20251031 |