| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chem | China national standards | MT | 4947.07 | USD | 20251205 |
| Shandong Zhiheng | China national standards | MT | 4947.07 | USD | 20251205 |
| Weifang Sutong Chem | China national standards | MT | 4805.72 | USD | 20251205 |
| Shandong Zhiheng | China national standards | MT | 4948.19 | USD | 20251204 |
| Weifang Yahua Chem | Industrial Grade | MT | 4948.19 | USD | 20251204 |
| Shandong Hongyang Chem | China national standards | MT | 4948.19 | USD | 20251204 |
| Shandong Zhiheng | China national standards | MT | 4946.72 | USD | 20251203 |
| Weifang Sutong Chem | China national standards | MT | 4706.45 | USD | 20251203 |
| Shandong Hongyang Chem | China national standards | MT | 4946.72 | USD | 20251203 |
| Shouguang ZixuChem | Industrial Grade | MT | 4802.67 | USD | 20251202 |