| Vendor | Spec | Unit | Price | Currency | Date |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 328.32 | USD | 20251016 |
| China national standards | MT | 408.63 | USD | 20251016 | |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 302.95 | USD | 20251016 |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 302.95 | USD | 20251016 |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 302.95 | USD | 20251016 |
| China national standards | MT | 366.36 | USD | 20251016 | |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 366.36 | USD | 20251016 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 338.18 | USD | 20251016 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 338.18 | USD | 20251016 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 422.73 | USD | 20251016 |