| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1272.03 | USD | 20251210 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1271.67 | USD | 20251209 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1271.83 | USD | 20251208 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1272.1 | USD | 20251205 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1272.39 | USD | 20251204 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1272.01 | USD | 20251203 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1271.29 | USD | 20251202 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1271.92 | USD | 20251201 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1271.38 | USD | 20251128 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1271.56 | USD | 20251127 |