| Vendor | Spec | Unit | Price | Currency | Date |
| Dongying Jinmao Alum | China national standards | MT | 1153.9 | USD | 20260109 |
| Dongying Jinmao Alum | China national standards | MT | 1123.26 | USD | 20251229 |
| Shandong Zhenkun | China national standards | MT | 1001.61 | USD | 20251211 |
| Shandong Yihe Chem | China national standards | MT | 1075.18 | USD | 20251211 |
| Shandong Zhiheng | China national standards | MT | 1336.9 | USD | 20251211 |
| Shandong Zhiheng | China national standards | MT | 1414.71 | USD | 20251211 |
| Shandong Hongyang Chem | China national standards | MT | 1435.93 | USD | 20251211 |
| Shandong Hongyang Chem | China national standards | MT | 1435.93 | USD | 20251211 |
| Shandong Hongyang Chem | China national standards | MT | 1435.93 | USD | 20251211 |
| Aite Zhejiang | China national standards | MT | 1386.41 | USD | 20251211 |