| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yeyang Chem | China national standards | MT | 1259.32 | USD | 20250728 |
| Shandong Langchem | China national standards | MT | 1235.54 | USD | 20250728 |
| Shandong Junfeng | China national standards | MT | 1119.4 | USD | 20250728 |
| Shandong Langchem | China national standards | MT | 1236.37 | USD | 20250726 |
| Shandong Yeyang Chem | China national standards | MT | 1260.17 | USD | 20250726 |
| Shandong Junfeng | China national standards | MT | 1120.15 | USD | 20250726 |
| Shandong Langchem | China national standards | MT | 1236.37 | USD | 20250725 |
| Shandong Yeyang Chem | China national standards | MT | 1260.17 | USD | 20250725 |
| Shandong Langchem | China national standards | MT | 1236.95 | USD | 20250724 |
| Shandong Junfeng | China national standards | MT | 1120.68 | USD | 20250724 |