| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Zhiheng | China national standards | MT | 4941.76 | USD | 20251114 |
| Weifang Yahua Chem | Industrial Grade | MT | 4447.58 | USD | 20251114 |
| Weifang Longmao Chem | Industrial Grade | MT | 4374.51 | USD | 20251113 |
| Weifang Sutong Chem | China national standards | MT | 4445.07 | USD | 20251113 |
| Shandong Hongyang Chem | China national standards | MT | 4938.97 | USD | 20251113 |
| Weifang Sutong Chem | China national standards | MT | 4418.84 | USD | 20251112 |
| Shandong Hongyang Chem | China national standards | MT | 4941.2 | USD | 20251112 |
| Shandong Zhiheng | China national standards | MT | 4941.2 | USD | 20251112 |
| Weifang Yahua Chem | Industrial Grade | MT | 4445.01 | USD | 20251111 |
| Shandong Hongyang Chem | China national standards | MT | 4938.9 | USD | 20251111 |