| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Junfeng | China national standards | MT | 1121.31 | USD | 20250807 |
| Shandong Langchem | China national standards | MT | 1237.65 | USD | 20250807 |
| Shandong Langchem | China national standards | MT | 1236.54 | USD | 20250806 |
| Shandong Junfeng | China national standards | MT | 1120.31 | USD | 20250806 |
| Shandong Yeyang Chem | China national standards | MT | 1260.35 | USD | 20250806 |
| Shandong Yeyang Chem | China national standards | MT | 1261.1 | USD | 20250805 |
| Shandong Langchem | China national standards | MT | 1237.28 | USD | 20250805 |
| Shandong Junfeng | China national standards | MT | 1120.98 | USD | 20250805 |
| Shandong Langchem | China national standards | MT | 1236.78 | USD | 20250804 |
| Shandong Junfeng | China national standards | MT | 1120.53 | USD | 20250804 |