| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Luxi Chem | China national standards | MT | 551.06 | USD | 20251209 |
| Shandong Luxi Chem | China national standards | MT | 551.13 | USD | 20251208 |
| Shandong Luxi Chem | China national standards | MT | 551.37 | USD | 20251204 |
| Shandong Luxi Chem | China national standards | MT | 550.89 | USD | 20251202 |
| Shandong Luxi Chem | China national standards | MT | 551.17 | USD | 20251201 |
| Shandong Luxi Chem | China national standards | MT | 548.87 | USD | 20250930 |
| Shandong Luxi Chem | China national standards | MT | 548.61 | USD | 20250929 |
| Shandong Luxi Chem | China national standards | MT | 548.12 | USD | 20250928 |