| Vendor | Spec | Unit | Price | Currency | Date |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 351.87 | USD | 20251011 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 394.1 | USD | 20251011 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.06 | USD | 20251011 |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 302.61 | USD | 20251011 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 365.95 | USD | 20251011 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 329.35 | USD | 20251011 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 365.95 | USD | 20251011 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 365.95 | USD | 20251011 |
| China national standards | MT | 365.95 | USD | 20251011 | |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 330.76 | USD | 20251011 |