| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chem | China national standards | MT | 4943.78 | USD | 20251126 |
| Shandong Zhiheng | China national standards | MT | 4943.78 | USD | 20251126 |
| Weifang Yahua Chem | Industrial Grade | MT | 4661.28 | USD | 20251126 |
| Weifang Sutong Chem | China national standards | MT | 4477.65 | USD | 20251126 |
| Shouguang ZixuChem | Industrial Grade | MT | 4659.31 | USD | 20251125 |
| Weifang Longmao Chem | Industrial Grade | MT | 4659.31 | USD | 20251125 |
| Weifang Longmao Chem | Industrial Grade | MT | 4657.92 | USD | 20251124 |
| Weifang Yahua Chem | Industrial Grade | MT | 4657.92 | USD | 20251124 |
| Shouguang ZixuChem | Industrial Grade | MT | 4657.92 | USD | 20251124 |
| Weifang Sutong Chem | China national standards | MT | 4444.44 | USD | 20251123 |