| Vendor | Spec | Unit | Price | Currency | Date |
| Ningxia Xingping Chem | China national standards | MT | 364.55 | USD | 20251209 |
| Shaanxi CoalChem | China national standards | MT | 367.37 | USD | 20251209 |
| IM Yongxin Chem | China national standards | MT | 381.5 | USD | 20251209 |
| Ningxia Xingping Chem | China national standards | MT | 364.59 | USD | 20251208 |
| Shaanxi CoalChem | China national standards | MT | 360.35 | USD | 20251208 |
| IM Yongxin Chem | China national standards | MT | 381.55 | USD | 20251208 |
| Shaanxi CoalChem | China national standards | MT | 360.43 | USD | 20251205 |
| IM Yongxin Chem | China national standards | MT | 381.63 | USD | 20251205 |
| Ningxia Xingping Chem | China national standards | MT | 364.67 | USD | 20251205 |
| IM Yongxin Chem | China national standards | MT | 381.72 | USD | 20251204 |