| Vendor | Spec | Unit | Price | Currency | Date |
| Weifang Sutong Chem | China national standards | MT | 4402.68 | USD | 20251111 |
| Weifang Yahua Chem | Industrial Grade | MT | 4445.01 | USD | 20251111 |
| Weifang Longmao Chem | Industrial Grade | MT | 4375.07 | USD | 20251110 |
| Shouguang ZixuChem | Industrial Grade | MT | 4375.07 | USD | 20251110 |
| Shandong Zhiheng | China national standards | MT | 4939.6 | USD | 20251110 |
| Shandong Hongyang Chem | China national standards | MT | 4939.6 | USD | 20251110 |
| Weifang Sutong Chem | China national standards | MT | 4390.42 | USD | 20251107 |
| Shandong Hongyang Chem | China national standards | MT | 4940.99 | USD | 20251107 |
| Shandong Zhiheng | China national standards | MT | 4940.99 | USD | 20251107 |
| Shouguang ZixuChem | Industrial Grade | MT | 4374.51 | USD | 20251106 |