| Vendor | Spec | Unit | Price | Currency | Date |
| China national standards | MT | 354.73 | USD | 20251201 | |
| Shandong Shuojia Chemical Co., Ltd. | China national standards | MT | 353.31 | USD | 20251201 |
| Shanghai Huayi Holding Group Co., Ltd. | China national standards | MT | 423.97 | USD | 20251201 |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 303.85 | USD | 20251201 |
| Hebei Pengfa Chemcal Co., Ltd. | China national standards | MT | 329.15 | USD | 20251130 |
| China national standards | MT | 395.54 | USD | 20251130 | |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 324.91 | USD | 20251130 |
| Shanghai Huayi Holding Group Co., Ltd. | China national standards | MT | 423.79 | USD | 20251130 |
| Henan Longyu Coal Chemical Co., Ltd. | China national standards | MT | 331.97 | USD | 20251130 |
| China national standards | MT | 296.66 | USD | 20251130 |