| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Fusheng | China national standards | MT | 576.23 | USD | 20250928 |
| Shandong Hongyang Chem | China national standards | MT | 534.07 | USD | 20250928 |
| Shandong Jinshenrun Chem | China national standards | MT | 590.29 | USD | 20250927 |
| Shandong Yushuo Chem | China national standards | MT | 562.18 | USD | 20250927 |