| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 303.56 | USD | 20251125 |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 303.56 | USD | 20251125 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 324.74 | USD | 20251125 |
| China national standards | MT | 389.57 | USD | 20251124 | |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 395.22 | USD | 20251124 |
| China national standards | MT | 324.64 | USD | 20251124 | |
| China national standards | MT | 423.45 | USD | 20251124 | |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 331.7 | USD | 20251124 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 324.64 | USD | 20251124 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 423.45 | USD | 20251124 |