| Vendor | Spec | Unit | Price | Currency | Date |
| Changzhou Jiaye Chem | China national standards | MT | 508.5 | USD | 20251126 |
| Changzhou Jiaye Chem | China national standards | MT | 508.0 | USD | 20251111 |
| Changzhou Jiaye Chem | China national standards | MT | 508.17 | USD | 20251029 |
| Changzhou Jiaye Chem | China national standards | MT | 507.54 | USD | 20251021 |
| Changzhou Jiaye Chem | China national standards | MT | 506.99 | USD | 20251013 |