| Vendor | Spec | Unit | Price | Currency | Date |
| Chongqing Changfeng | China national standards | MT | 1438.0 | USD | 20260611 |
| Sinopec | China national standards | MT | 1423.33 | USD | 20260611 |
| Huai'an Fuqiang | China national standards | MT | 1408.66 | USD | 20260611 |
| Dongying Jinmao Alum | China national standards | MT | 1393.98 | USD | 20260611 |
| Dongying Huatai Chem | China national standards | MT | 1393.98 | USD | 20260611 |
| Shandong Jinling | China national standards | MT | 1393.98 | USD | 20260611 |
| Chongqing Changfeng | China national standards | MT | 1438.43 | USD | 20260610 |
| Sinopec | China national standards | MT | 1423.75 | USD | 20260610 |
| Huai'an Fuqiang | China national standards | MT | 1409.07 | USD | 20260610 |
| Dongying Jinmao Alum | China national standards | MT | 1394.39 | USD | 20260610 |