| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langchem | China national standards | MT | 1067.0 | USD | 20251201 |
| Shandong Langchem | China national standards | MT | 975.14 | USD | 20251201 |
| Shandong Langchem | China national standards | MT | 1066.55 | USD | 20251129 |
| Shandong Langchem | China national standards | MT | 974.73 | USD | 20251129 |
| Shandong Langchem | China national standards | MT | 974.73 | USD | 20251128 |
| Shandong Langchem | China national standards | MT | 1257.26 | USD | 20251128 |
| Shandong Langchem | China national standards | MT | 1066.55 | USD | 20251128 |
| Shandong Langchem | China national standards | MT | 1066.7 | USD | 20251127 |
| Shandong Langchem | China national standards | MT | 974.87 | USD | 20251127 |
| Shandong Langchem | China national standards | MT | 1066.44 | USD | 20251126 |