| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Chem | Industrial Grade | MT | 15902.73 | USD | 20250924 |
| Shandong Yihe Chem | Industrial Grade | MT | 15902.73 | USD | 20250923 |
| Shandong Yihe Chem | Industrial Grade | MT | 15891.77 | USD | 20250922 |
| Shandong Yihe Chem | Industrial Grade | MT | 15886.85 | USD | 20250919 |
| Shandong Yihe Chem | Industrial Grade | MT | 15896.46 | USD | 20250918 |