| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Chem | China national standards | MT | 514.95 | USD | 20251102 |
| Shandong Yihe Chem | China national standards | MT | 514.95 | USD | 20251101 |
| Shandong Yihe Chem | China national standards | MT | 536.12 | USD | 20251101 |
| Shandong Yihe Chem | China national standards | MT | 536.12 | USD | 20251031 |
| Shandong Yihe Chem | China national standards | MT | 514.95 | USD | 20251031 |
| Shandong Yihe Chem | China national standards | MT | 515.07 | USD | 20251030 |
| Shandong Yihe Chem | China national standards | MT | 536.24 | USD | 20251030 |
| Shandong Yihe Chem | China national standards | MT | 536.4 | USD | 20251029 |
| Shandong Yihe Chem | China national standards | MT | 515.22 | USD | 20251029 |
| Shandong Yihe Chem | China national standards | MT | 536.3 | USD | 20251028 |