| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Chem | China national standards | MT | 1622.46 | USD | 20251101 |
| Shandong Yihe Chem | China national standards | MT | 1622.46 | USD | 20251101 |
| Shandong Yihe Chem | China national standards | MT | 1622.46 | USD | 20251031 |
| Shandong Yihe Chem | China national standards | MT | 1622.46 | USD | 20251031 |
| Shandong Yihe Chem | China national standards | MT | 1566.38 | USD | 20251030 |
| Shandong Yihe Chem | China national standards | MT | 1566.38 | USD | 20251030 |
| Shandong Yihe Chem | China national standards | MT | 1552.73 | USD | 20251029 |
| Shandong Yihe Chem | China national standards | MT | 1552.73 | USD | 20251029 |
| Shandong Yihe Chem | China national standards | MT | 1510.11 | USD | 20251028 |
| Shandong Yihe Chem | China national standards | MT | 1510.11 | USD | 20251028 |