| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langchem | China national standards | MT | 1213.4 | USD | 20251121 |
| Shandong Langchem | China national standards | MT | 1396.83 | USD | 20251121 |
| Shandong Langchem | China national standards | MT | 1262.79 | USD | 20251121 |
| Shandong Langchem | China national standards | MT | 1212.89 | USD | 20251120 |
| Shandong Langchem | China national standards | MT | 1262.25 | USD | 20251120 |
| Shandong Langchem | China national standards | MT | 1396.23 | USD | 20251120 |
| Shandong Langchem | China national standards | MT | 1255.2 | USD | 20251120 |
| Shandong Langchem | China national standards | MT | 1255.79 | USD | 20251119 |
| Shandong Langchem | China national standards | MT | 1213.46 | USD | 20251119 |
| Shandong Langchem | China national standards | MT | 1396.88 | USD | 20251119 |