| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Jinrihe Chem | China national standards | MT | 2821.99 | USD | 20251119 |
| Jinan Jinrihe Chem | China national standards | MT | 2822.63 | USD | 20251118 |
| Jinan Jinrihe Chem | China national standards | MT | 2823.86 | USD | 20251114 |
| Jinan Jinrihe Chem | China national standards | MT | 2822.27 | USD | 20251113 |