| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 302.44 | USD | 20250929 |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 344.33 | USD | 20250928 |
| Suzhou Shangma Chemical Technology Co., Ltd. | China national standards | MT | 407.58 | USD | 20250928 |
| Chizhou Xinyu Chemical Technology Co., Ltd. | China national standards | MT | 407.58 | USD | 20250928 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 351.36 | USD | 20250928 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 393.52 | USD | 20250928 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 386.5 | USD | 20250928 |
| Tianjin Shengtongtai Chemical Co., Ltd. | China national standards | MT | 351.36 | USD | 20250928 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.41 | USD | 20250928 |
| Shandong Zhihengda Import and Export Co., Ltd. | China national standards | MT | 365.41 | USD | 20250928 |