| Vendor | Spec | Unit | Price | Currency | Date |
| Dongying Jinmao Alum | China national standards | MT | 1198.66 | USD | 20260116 |
| Dongying Jinmao Alum | China national standards | MT | 1191.02 | USD | 20260112 |
| Dongying Jinmao Alum | China national standards | MT | 1191.02 | USD | 20260112 |
| Dongying Jinmao Alum | China national standards | MT | 1191.02 | USD | 20260112 |
| Dongying Jinmao Alum | China national standards | MT | 1153.9 | USD | 20260109 |
| Dongying Jinmao Alum | China national standards | MT | 1153.9 | USD | 20260109 |
| Dongying Jinmao Alum | China national standards | MT | 1123.26 | USD | 20251229 |