| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1146.72 | USD | 20250901 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1146.87 | USD | 20250828 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1139.83 | USD | 20250828 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1146.14 | USD | 20250827 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1144.86 | USD | 20250826 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1138.26 | USD | 20250825 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1145.29 | USD | 20250825 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1142.72 | USD | 20250823 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1135.71 | USD | 20250823 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1135.71 | USD | 20250822 |