| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1264.26 | USD | 20250826 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1264.74 | USD | 20250825 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1261.9 | USD | 20250823 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1261.9 | USD | 20250822 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1262.5 | USD | 20250821 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1260.79 | USD | 20250820 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1260.79 | USD | 20250820 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1261.23 | USD | 20250819 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1261.88 | USD | 20250818 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1261.02 | USD | 20250815 |