| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Yihe Chem | China national standards | MT | 12855.1 | USD | 20251128 |
| Shandong Yihe Chem | Industrial Grade | MT | 13420.16 | USD | 20251128 |
| Shandong Yihe Chem | China national standards | MT | 12856.92 | USD | 20251127 |
| Shandong Yihe Chem | Industrial Grade | MT | 13422.06 | USD | 20251127 |
| Shandong Yihe Chem | Industrial Grade | MT | 13418.84 | USD | 20251126 |
| Shandong Yihe Chem | China national standards | MT | 12571.33 | USD | 20251126 |
| Shandong Yihe Chem | China national standards | MT | 12283.62 | USD | 20251125 |
| Shandong Yihe Chem | Industrial Grade | MT | 13413.15 | USD | 20251125 |
| Shandong Yihe Chem | China national standards | MT | 11997.69 | USD | 20251124 |
| Shandong Yihe Chem | Industrial Grade | MT | 13409.18 | USD | 20251124 |