| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Chem | China national standards | MT | 515.27 | USD | 20251107 |
| Shandong Yihe Chem | China national standards | MT | 515.06 | USD | 20251106 |
| Shandong Yihe Chem | China national standards | MT | 536.23 | USD | 20251106 |
| Shandong Yihe Chem | China national standards | MT | 535.96 | USD | 20251105 |
| Shandong Yihe Chem | China national standards | MT | 514.8 | USD | 20251105 |
| Shandong Yihe Chem | China national standards | MT | 514.92 | USD | 20251104 |
| Shandong Yihe Chem | China national standards | MT | 536.08 | USD | 20251104 |
| Shandong Yihe Chem | China national standards | MT | 536.22 | USD | 20251103 |
| Shandong Yihe Chem | China national standards | MT | 515.05 | USD | 20251103 |
| Shandong Yihe Chem | China national standards | MT | 514.95 | USD | 20251102 |