| Vendor | Spec | Unit | Price | Currency | Date |
| Ningxia Xingping Chem | China national standards | MT | 367.82 | USD | 20251211 |
| Ningxia Xingping Chem | China national standards | MT | 367.48 | USD | 20251210 |
| Ningxia Xingping Chem | China national standards | MT | 364.55 | USD | 20251209 |
| Ningxia Xingping Chem | China national standards | MT | 364.59 | USD | 20251208 |
| Ningxia Xingping Chem | China national standards | MT | 364.67 | USD | 20251205 |
| Ningxia Xingping Chem | China national standards | MT | 364.75 | USD | 20251204 |
| Ningxia Xingping Chem | China national standards | MT | 364.64 | USD | 20251203 |
| Ningxia Xingping Chem | China national standards | MT | 360.2 | USD | 20251202 |
| Ningxia Xingping Chem | China national standards | MT | 360.38 | USD | 20251201 |
| Ningxia Xingping Chem | China national standards | MT | 360.23 | USD | 20251128 |