| Vendor | Spec | Unit | Price | Currency | Date |
| IM Yongxin Chem | China national standards | MT | 351.87 | USD | 20251010 |
| IM Yongxin Chem | China national standards | MT | 351.61 | USD | 20251009 |
| Ningxia Xingping Chem | China national standards | MT | 365.67 | USD | 20251009 |
| Fugu Aoweiga Energy | China national standards | MT | 369.89 | USD | 20251009 |
| Shaanxi CoalChem | China national standards | MT | 360.05 | USD | 20251009 |
| Wuhai Zhonglian Chem | China national standards | MT | 351.61 | USD | 20251009 |
| Shaanxi CoalChem | China national standards | MT | 360.28 | USD | 20250930 |
| Wuhai Zhonglian Chem | China national standards | MT | 379.99 | USD | 20250930 |
| Ningxia Xingping Chem | China national standards | MT | 365.91 | USD | 20250930 |
| IM Yongxin Chem | China national standards | MT | 358.88 | USD | 20250930 |