| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langchem | China national standards | MT | 1257.17 | USD | 20251202 |
| Shandong Langchem | China national standards | MT | 1398.42 | USD | 20251202 |
| Shandong Langchem | China national standards | MT | 1264.23 | USD | 20251202 |
| Shandong Langchem | China national standards | MT | 1264.86 | USD | 20251201 |
| Shandong Langchem | China national standards | MT | 1399.12 | USD | 20251201 |
| Shandong Langchem | China national standards | MT | 1257.79 | USD | 20251201 |
| Shandong Langchem | China national standards | MT | 1215.39 | USD | 20251201 |
| Shandong Langchem | China national standards | MT | 1398.52 | USD | 20251129 |
| Shandong Langchem | China national standards | MT | 1264.32 | USD | 20251129 |
| Shandong Langchem | China national standards | MT | 1257.26 | USD | 20251129 |