| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Luxi Chem | China national standards | MT | 578.44 | USD | 20251031 |
| Shandong Luxi Chem | China national standards | MT | 578.57 | USD | 20251030 |
| Shandong Luxi Chem | China national standards | MT | 578.03 | USD | 20251021 |
| Shandong Luxi Chem | China national standards | MT | 577.07 | USD | 20251010 |