| Vendor | Spec | Unit | Price | Currency | Date |
| Shouguang ZixuChem | China national standards | MT | 3941.0 | USD | 20251011 |
| Shandong Zhiheng | China national standards | MT | 4926.25 | USD | 20251011 |
| Weifang Longmao Chem | China national standards | MT | 3941.0 | USD | 20251011 |
| Weifang Longmao Chem | Industrial Grade | MT | 3941.0 | USD | 20251010 |
| Shouguang ZixuChem | Industrial Grade | MT | 3941.0 | USD | 20251010 |
| Shandong Hongyang Chem | China national standards | MT | 4926.25 | USD | 20251010 |
| Shandong Zhiheng | China national standards | MT | 4926.25 | USD | 20251010 |
| Shandong Hongyang Chem | China national standards | MT | 4922.51 | USD | 20251009 |
| Shandong Zhiheng | China national standards | MT | 4922.51 | USD | 20251009 |
| Weifang Sutong Chem | China national standards | MT | 3940.61 | USD | 20251004 |