| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chem | Industrial Grade | MT | 15424.24 | USD | 20250923 |
| Shandong Hongyang Chem | Industrial Grade | MT | 15413.61 | USD | 20250922 |
| Shandong Hongyang Chem | Industrial Grade | MT | 15408.84 | USD | 20250919 |
| Shandong Hongyang Chem | Industrial Grade | MT | 15418.16 | USD | 20250918 |