| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 331.22 | USD | 20251018 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 366.46 | USD | 20251018 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 366.46 | USD | 20251018 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 338.27 | USD | 20251018 |
| China national standards | MT | 366.46 | USD | 20251018 | |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 366.46 | USD | 20251018 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 394.65 | USD | 20251017 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 366.46 | USD | 20251017 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.6 | USD | 20251017 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 373.51 | USD | 20251017 |