| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Pulaihua Chem | China national standards | MT | 1477.87 | USD | 20251011 |
| Jinan Pulaihua Chem | China national standards | MT | 1477.69 | USD | 20250923 |
| Hunan JinyuChem | China national standards | MT | 1110.67 | USD | 20250919 |
| Jinan Pulaihua Chem | China national standards | MT | 1477.1 | USD | 20250918 |