| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Pulaihua Chem | China national standards | MT | 1407.5 | USD | 20251011 |
| Jinan Pulaihua Chem | China national standards | MT | 1337.12 | USD | 20251011 |
| Jinan Pulaihua Chem | China national standards | MT | 1336.95 | USD | 20250923 |
| Jinan Pulaihua Chem | China national standards | MT | 1407.32 | USD | 20250923 |
| Jinan Pulaihua Chem | China national standards | MT | 1336.43 | USD | 20250918 |