| Vendor | Spec | Unit | Price | Currency | Date |
| Shanghai Malu Chem | Industrial Grade | MT | 289.02 | USD | 20251021 |
| Shanghai Malu Chem | China national standards | MT | 296.07 | USD | 20251021 |
| Shanghai Malu Chem | China national standards | MT | 295.75 | USD | 20251013 |
| Shanghai Malu Chem | Industrial Grade | MT | 288.7 | USD | 20251013 |
| Shanghai Malu Chem | China national standards | MT | 295.57 | USD | 20251010 |
| Shanghai Malu Chem | Industrial Grade | MT | 288.32 | USD | 20251009 |