| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 303.85 | USD | 20251201 |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 303.85 | USD | 20251201 |
| Shanghai Huayi Holding Group Co., Ltd. | China national standards | MT | 423.97 | USD | 20251201 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 423.97 | USD | 20251201 |
| Chizhou Xinyu Chemical Technology Co., Ltd. | China national standards | MT | 409.84 | USD | 20251201 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 367.44 | USD | 20251201 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 353.31 | USD | 20251201 |
| China national standards | MT | 423.97 | USD | 20251201 | |
| China national standards | MT | 325.05 | USD | 20251201 | |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 367.44 | USD | 20251201 |