| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chem | China national standards | MT | 4943.92 | USD | 20251202 |
| Weifang Yahua Chem | Industrial Grade | MT | 4802.67 | USD | 20251202 |
| Shouguang ZixuChem | Industrial Grade | MT | 4802.67 | USD | 20251202 |
| Weifang Sutong Chem | China national standards | MT | 4661.41 | USD | 20251202 |
| Shandong Hongyang Chem | China national standards | MT | 4946.37 | USD | 20251201 |
| Weifang Yahua Chem | Industrial Grade | MT | 4805.04 | USD | 20251201 |
| Shandong Zhiheng | China national standards | MT | 4946.37 | USD | 20251201 |
| Weifang Longmao Chem | Industrial Grade | MT | 4663.72 | USD | 20251201 |
| Weifang Sutong Chem | China national standards | MT | 4522.39 | USD | 20251201 |
| Shouguang ZixuChem | Industrial Grade | MT | 4805.04 | USD | 20251201 |