| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Mengkanda Chem | China national standards | MT | 533.06 | USD | 20250821 |
| Shandong Mengkanda Chem | China national standards | MT | 532.33 | USD | 20250820 |
| Shandong Mengkanda Chem | China national standards | MT | 532.52 | USD | 20250819 |
| Shandong Mengkanda Chem | China national standards | MT | 532.79 | USD | 20250818 |