| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Baishui Chem | China national standards | MT | 1032.74 | USD | 20251211 |
| Shandong Baishui Chem | China national standards | MT | 1031.76 | USD | 20251210 |
| Shandong Baishui Chem | China national standards | MT | 1031.23 | USD | 20251129 |
| Shandong Baishui Chem | China national standards | MT | 1031.23 | USD | 20251128 |