| Vendor | Spec | Unit | Price | Currency | Date |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 303.01 | USD | 20251022 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 338.36 | USD | 20251021 |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 369.38 | USD | 20251021 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 328.49 | USD | 20251021 |
| Shanghai Huayi Holding Group Co., Ltd. | China national standards | MT | 422.95 | USD | 20251021 |
| China national standards | MT | 369.38 | USD | 20251021 | |
| Yankuang Guotai Chemical Co., Ltd. | China national standards | MT | 366.56 | USD | 20251021 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 338.36 | USD | 20251021 |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 366.56 | USD | 20251021 |
| China national standards | MT | 366.56 | USD | 20251021 |