| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langchem | China national standards | MT | 987.51 | USD | 20251104 |
| Shandong Langchem | China national standards | MT | 1058.32 | USD | 20251103 |
| Shandong Langchem | China national standards | MT | 987.77 | USD | 20251103 |
| Shandong Langchem | China national standards | MT | 1142.99 | USD | 20251103 |
| Shandong Langchem | China national standards | MT | 1142.78 | USD | 20251101 |
| Shandong Langchem | China national standards | MT | 987.58 | USD | 20251101 |
| Shandong Langchem | China national standards | MT | 1058.13 | USD | 20251101 |
| Shandong Langchem | China national standards | MT | 987.58 | USD | 20251031 |
| Shandong Langchem | China national standards | MT | 1058.13 | USD | 20251031 |
| Shandong Langchem | China national standards | MT | 1058.13 | USD | 20251031 |