| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Luxi Chem | China national standards | MT | 1548.1 | USD | 20251001 |
| Shandong Luxi Chem | China national standards | MT | 1547.36 | USD | 20250929 |
| Shandong Luxi Chem | China national standards | MT | 1545.99 | USD | 20250928 |
| Shandong Luxi Chem | China national standards | MT | 1545.99 | USD | 20250927 |