| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Chem | China national standards | MT | 1636.68 | USD | 20251123 |
| Shandong Yihe Chem | China national standards | MT | 1636.68 | USD | 20251123 |
| Shandong Yihe Chem | China national standards | MT | 1636.68 | USD | 20251121 |
| Shandong Yihe Chem | China national standards | MT | 1636.68 | USD | 20251121 |
| Shandong Yihe Chem | China national standards | MT | 1635.99 | USD | 20251120 |
| Shandong Yihe Chem | China national standards | MT | 1635.99 | USD | 20251120 |
| Shandong Yihe Chem | China national standards | MT | 1636.75 | USD | 20251119 |
| Shandong Yihe Chem | China national standards | MT | 1636.75 | USD | 20251119 |
| Shandong Yihe Chem | China national standards | MT | 1637.12 | USD | 20251118 |
| Shandong Yihe Chem | China national standards | MT | 1637.12 | USD | 20251118 |