| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Daoqin Chemical Co., Ltd. | China national standards | MT | 985.12 | USD | 20250924 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 1041.42 | USD | 20250924 |
| China national standards | MT | 1020.31 | USD | 20250924 | |
| Xiamen Yudeshun Chemical Products Co., Ltd. | China national standards | MT | 1674.71 | USD | 20250924 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 999.2 | USD | 20250924 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 1041.42 | USD | 20250924 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 1041.42 | USD | 20250924 |
| Yangmei Taihua Coking Investment Co., Ltd. | China national standards | MT | 985.12 | USD | 20250924 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 999.2 | USD | 20250924 |
| Shandong Aite Chemical Co., Ltd. | China national standards | MT | 1125.86 | USD | 20250924 |