| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Fusheng | China national standards | MT | 1211.14 | USD | 20250526 |
| Shandong Fusheng | China national standards | MT | 1211.14 | USD | 20250526 |
| Qingdao Shengze Chem | China national standards | MT | 1099.77 | USD | 20250526 |
| Qingdao Shengze Chem | China national standards | MT | 1098.46 | USD | 20250525 |