| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 395.74 | USD | 20251210 |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 303.87 | USD | 20251210 |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 346.28 | USD | 20251210 |
| Hualu Holdings Group Co., Ltd. | China national standards | MT | 416.94 | USD | 20251210 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 353.34 | USD | 20251210 |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 303.87 | USD | 20251210 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 381.61 | USD | 20251210 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 367.48 | USD | 20251210 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 424.01 | USD | 20251210 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 367.48 | USD | 20251210 |