| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 303.89 | USD | 20251205 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 395.77 | USD | 20251205 |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 303.89 | USD | 20251205 |
| China national standards | MT | 395.77 | USD | 20251205 | |
| Tianjin Shengtongtai Chemical Co., Ltd. | China national standards | MT | 353.36 | USD | 20251205 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 353.36 | USD | 20251205 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 353.36 | USD | 20251205 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 353.36 | USD | 20251205 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 353.44 | USD | 20251204 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 353.44 | USD | 20251204 |