| Vendor | Spec | Unit | Price | Currency | Date |
| Dongying Jinmao Alum | China national standards | MT | 1648.4 | USD | 20260309 |
| Dongying Jinmao Alum | China national standards | MT | 1492.21 | USD | 20260306 |
| Dongying Jinmao Alum | China national standards | MT | 1434.64 | USD | 20260305 |
| Dongying Jinmao Alum | China national standards | MT | 1403.28 | USD | 20260304 |
| Dongying Jinmao Alum | China national standards | MT | 1389.53 | USD | 20260303 |
| Dongying Jinmao Alum | China national standards | MT | 1357.68 | USD | 20260302 |
| Dongying Jinmao Alum | China national standards | MT | 1314.5 | USD | 20260228 |
| Dongying Jinmao Alum | China national standards | MT | 1300.05 | USD | 20260227 |
| Dongying Jinmao Alum | China national standards | MT | 1285.61 | USD | 20260226 |
| Dongying Jinmao Alum | China national standards | MT | 1265.77 | USD | 20260209 |